Steve's Guide to Gold Nugget Detectors
This is my latest "Nugget Detector Guide", now published for over fifteen years, updated September 2017 with some of the latest model information. Each model has a short description, followed by a very PERSONAL OPINION. Copyright 2002-2017 Herschbach Enterprises - Please do not reuse or repost without my express permission.
This is offered as a simple guide for those wanting a general comparison of the various nugget detectors available new with warranty, along with some kind of real opinion about them. That's all it is, folks, so take it or leave it for what it is worth. It's just that listing specs is of little help to people, and so I take my best stab at providing some guidance for those newer to detecting. These are only my opinions based on my experience with various detectors over the years. While I do have a lot of experience, I must throw in the caveat that I have not used all detectors under all conditions. What may be considered a good detector at one location may not be so good at another location due to differences in ground mineralization and the gold itself. Detector performance is site specific and so your mileage may vary. Never forget that when reading comparisons on the internet.
Although many detectors sold today can potentially find gold nuggets, I've chosen to only list current models from major manufacturers that are sold and marketed primarily as prospecting detectors or that at least have a specific prospecting mode. They are the ones most people will be considering, and I have personally used all these models. If you are interested in other general purpose detectors that might make good prospecting machine but are not listed here, look at my more comprehensive detector review page. Some discontinued prospecting detectors are also listed there.
Please, if you own one of these detectors, and I call it like I see it, don't take offense. Any nugget detector made will find gold in capable hands, and the owner is far more important than the detector model. I'll put a good operator with almost any detector on this list up against a novice with whatever is deemed "best" and bet on the experienced operator every time. The person using the detector finds the gold. The detector is actually one of the less important factors in nugget detecting success or failure.
A quick note to those who know nothing about these machines. These are metal detectors. There is no such thing as a "gold only" detector. These detectors will also find lead, copper, aluminum, and other metals. These units are best used to look for relatively larger pieces of gold at relatively shallow depths. Concentrations of gold dust are not detectable. Some of these units can hit gold that weighs as little as a grain (480 grains per ounce) or less but only at an inch or two. Only the larger nuggets can be found at depths exceeding a foot. Only world class nuggets weighing many ounces can be detected at over two feet. The vast majority of nuggets found are found at inches, not feet.
The detectors are listed in order based on the lowest price normally advertised on the internet as of the date below.
Steve's Guide to Gold Nugget Detectors - Updated September 2017
Fisher Gold Bug ($499, 19 kHz) - Not to be confused with the Gold Bug from the 1980's, this new model runs hotter than that old model, and offers full LCD target identification. The target ID makes the Gold Bug good for more than just nugget hunting, and it finds favor also with jewelry and relic hunters. This model normally comes with a 5" round DD coil to enhance the sensitivity to small gold but other stock coil options are available. The Gold Bug features an easy to use ground balance "Grab" function. Weight including a single 9V battery is 2.5 lbs. Many accessory coils are available for the Gold Bug. Details here.
Steve's Opinion - Light weight, sensitive, and full target identification. The Gold Bug is a good choice for prospecting, relic, or jewelry detecting and does fine as a coin detector also. This is my recommended entry level unit as it is a bargain for the price. However, if you can afford the small difference in money get the Gold Bug Pro instead to have the option of manual ground balance.
Teknetics T2 ($499, 13 kHz) - The T2 was updated for 2016 and is a true multi-purpose machine well suited for prospecting. The T2 has several discrimination modes plus a motion all-metal mode. Its outstanding feature is a fast response time and superb depth. The weight including four AA batteries is 3.5 lbs. The T2 comes stock with an 11" DD elliptical coil. There are seven accessory coils available (Fisher and Detech). The Limited Edition version adds three hunting modes and comes with two coils for a price of $899.00. Fisher (Fisher and Teknetics have the same parent company) sells a variant of this detector called the Fisher F75. The main functional difference in the F75 is it can use both DD and concentric coils - the T2 is DD only. The F75 also has an expanded coin discrimination scale compared to the T2. Details here.
Steve's Opinion - The T2 is an exception to the rule here in that it is a general purpose detector. However, huge numbers of these machines were sold in Africa where they developed a reputation as a productive gold detector. I have personally used the Fisher F75 variant myself to find many ounces of gold. If a person wants a general purpose detector for coins, relics, jewelry, and gold nuggets the T2 Classic at $499 is an incredible value. The T2/F75 weight and balance ergonomic design, the "feel on my arm", is the best of any detector I have ever used. People more concentrated on nugget detecting would probably be better served by a 19 kHz Gold Bug variant.
Minelab X-Terra 705 Gold ($600, 3, 7.5, 18.75 kHz) – This detector has a unique design feature. The standard unit comes with a 5" x 10" DD 18.75 kHz coil. Accessory coils are available not only at 18.75 kHz, but also at 3 kHz and 7.55 kHz. You can literally change the frequency of the detector by changing the coil! The X-Terra 705 has a large number of features and operating modes making it suitable for almost any type of metal detecting, be it for coins, jewelry, relics, or gold nuggets. Weight including four AA batteries 2.9 lbs. Over ten accessory coils are available for the X-Terra 705 (Minelab, Coiltek). Details here.
Steve's Opinion - I like the X-Terra 705 very much indeed. It has a very powerful all-metal Prospecting Mode. The X-Terra 705 offers both ground tracking and manual ground balance; I like having both options. I particularly like its very compact and lightweight design. What really sets the X-Terra 705 apart however is all its other features. The X-Terra 705 is a good choice for somebody who wants all the coin and jewelry detecting options important to urban detectorists. It has discrimination and tone options equaling far more expensive detectors. This is the machine for somebody who really wants all the features a top end detector offers and still have a good prospecting detector. 2017 Note - a new lower internet price of $600 makes this detector a real bargain for those wanting a full featured do-it-all detector.
Garrett AT Gold ($639, 18 kHz) - A totally new concept in metal detecting from Garrett Electronics. This full featured detector has everything you would expect from a dry land detector - LCD display, full control set and functions, speaker, interchangeable coils, and light weight. But it is submersible to 10 feet! Even the speaker is waterproof. Note that the unit itself may be submerged but if you want to put your head underwater you will need optional submersible headphones. Weight including a four AA batteries is 3 lbs. The stock coil is a 5" x 8" DD elliptical. Many accessory coils are available for the AT Gold. Details here.
Steve's Opinion - Usually you are going to sacrifice a lot for an underwater machine but the AT Gold has all the features of an above water detector and is waterproof. It also weighs less than many dry land units. There are optional coils, a real rarity in underwater detectors. Garrett has above water and underwater headphones for the unit, but an optional adapter will let you use you old favorites. There is a speaker for above water use that can be safely submerged - a genuine first. And best of all, ground balancing 18 kHz operation with a true threshold based all metal mode. I have found gold nuggets with this detector and it would be an excellent choice for jewelry detecting in fresh water lakes. Note that the AT Gold is too hot for use on wet salt sand or in salt water. For salt water Garrett makes the AT Pro, a toned down version of the AT more geared to coin and jewelry detecting. My bottom line on the AT Gold is that for dry land use I prefer to forgo special o-ring coil and headphone connectors. They are silicone lubricated and want to collect dirt. But for detecting in and around fresh water streams or in heavy rain the unit is a no-brainer. If you want to mask and snorkel for gold with a VLF detector this is the unit to get. Just do not forget to get the waterproof headphones also.
Fisher Gold Bug Pro ($649, 19 kHz) - Essentially the same as the Gold Bug above with the addition of manual ground balance. The target ID makes the Gold Bug Pro good for more than just nugget hunting, and it will find favor with jewelry and relic hunters. The manual ground balance gives expert operators the control they desire to get the best depth possible. This unit normally comes with a 5" round DD coil to enhance the sensitivity to small gold but other standard coil packages are available. Weight including a single 9V battery is 2.5 lbs. Many accessory coils are available for the Gold Bug Pro. Note - This model is also marketed as the Teknetics G2. The are the same detector except for the rod/handle assembly and coil. Details here.
Steve's Opinion - The Pro is the final version in this series which saw several early variations including the Gold Bug above. It is a excellent choice for prospecting, relic, or jewelry detecting and does fine as a coin detector also. I particularly like the fact that the meter always runs in discriminate mode when the detector is in all metal prospect mode - like running two detectors at once. The weight at 2.5 lbs. with the 5" coil is a dream come true. Get the 5" coil version and the optional 10" x 5" DD coil for a great package. For a basic VLF prospecting detector the Gold Bug Pro is an excellent choice for most people. A Steve's Pick.
Tesoro Lobo Super TRAQ ($679, 17.8 kHz) - Automatic ground tracking and full-range discrimination make the Lobo ST versatile and easy to operate. The Lobo is primarily a nugget detector, but is also suitable for coin and jewelry detecting. The automatic ground balance makes this detector easier to operate than manual ground balance detectors. Weight including eight AA batteries 3.5 lbs. The stock coil is a 5" x 10" DD elliptical. Seven accessory coils are available for the Lobo. Details here.
Steve's Opinion - The Lobo ST is a good nugget detector combined with a basic but capable coin detecting circuit. The discrimination mode is intended for coin detecting, but doubles as a decent iron ID nugget hunting mode, as long as the discrimination is not set too high (1.5-2). The Lobo wins points with me for its convertible design; it is one of few detectors left that can be hip or chest mounted and it has a good selection of accessory coils. What is lacking is a manual or "fixed" ground balance as it always runs in tracking while in all metal prospect mode. Conversely, you cannot ground balance the discrimination mode - it is preset at the factory. The main thing the Lobo has going for it is ease of operation and for this reason alone it is a great choice for beginners. However, since it was introduced in 1997 the Lobo is getting long in the tooth and is feature limited for the price in todays market.
Nokta FORS Gold+ ($679, 19 kHz) - The FORS Gold+ is a new detector from a relative newcomer to the US market, Nokta Engineering of Istanbul, Turkey. In business since 2001, this company is an up and comer in the metal detecting industry. The FORS Gold+ is a newer version of the FORS Gold model described above. The weight including four AA batteries is 3.9 lbs. The FORS Gold+ comes stock with an 10" x 5" DD elliptical coil and a 5" round DD coil. There are two additional accessory coils available. The FORS Gold+ is more focused on being just a gold prospecting detector but could serve well for relic hunting as well.
Steve's Opinion -This new model from Nokta is focused more on just gold prospecting than the previous FORS Gold model. The slightly higher 19 kHz frequency is slightly hotter on small gold and the addition of the new iSAT control allows the threshold retune rate to be customized for ground conditions. The stock coil is now the industry standard 10" x 5" elliptical used on many nugget detectors with a smaller 5" round coil included for work in tight quarters. I recommend anyone whose main goal is prospecting only chose this model over the other two previous FORS models.
Makro Gold Racer ($699, 56 kHz) - A new model from a company rather unknown in the United States. Makro is the sister company of Nokta, the manufacturer of the Nokta FORS Gold listed above. The new Gold Racer is based on the original Racer model released in February 2015. The Gold Racer at 56 kHz is rather unique in having all the features normally associated with coin and relic detectors yets running at a very high nugget detecting frequency. This makes it more of a general purpose detector than a dedicated nugget detector. The Gold Racer comes with a 10" x 5" DD coil and has three accesory coil options. The weight including four AA battereis is 3.0 lbs. Details here.
Steve's Opinion - I like the Gold Racer as it really is something new instead of just another mid-frequency do-it-all detector. The compact light weight design appeals to me as does the high frequency sensitivity to small gold nuggets. It is the only machine in it's class that can run a large (15" x 13.5" DD) high frequency coil and as well as having a concentric coil option. Best of all it offers a full range of discrimination features not seen in other high frequency nugget detectors, all at a very aggressive price.
White’s GMT ($729, 48 kHz) – The GMT has exceptional small gold capabilities with its high 48 kHz frequency. The GMT features automatic ground tracking for ease of operation, and also has manual ground balance for those wishing full control of their detector. The GMT also has one of the most advanced iron discrimination systems available in a dedicated nugget detector. Weight including eight AA batteries 3.9 lbs. Three accessory coils are available for the GMT. Details here.
Steve's Opinion - The GMT features both automatic ground tracking or fully adjustable manual ground balance, your choice and a real plus on the GMT. One of the most common problems people have with detectors is in getting the ground balance right. There are also areas where wildly varying ground mineralization makes constant manual retuning a chore. The automatic ground balance on the GMT lets a beginner get up and running quickly. It offers the pro the ability to deal with rapidly varying ground. And yet for those times when you need manual ground balance to really tweak the detector, the GMT has it also. The GMT always tracks the ground conditions, even when in manual mode, and so while in manual adjusting the ground balance can be as simple as hitting the "Grab" button. The LCD based "iron probability" readout offers more subtle iron discrimination than the all or nothing audio id on other units. The GMT rivals the Gold Bug 2 on small gold, and clearly outperforms it for depth on larger gold in highly mineralized ground. If you are looking for a combination of superb small gold capability combined with good depth on larger gold plus ease of operation the GMT is an excellent choice.
Fisher Gold Bug 2 ($764, 71 kHz) – The Gold Bug 2 is the highest frequency detector on the market, for extreme sensitivity to the smallest gold nuggets. In moderate to low mineral conditions, no detector will pick up a smaller nugget than the Gold Bug 2, especially if it is paired with its 6.5” accessory coil. The lightweight and tough hip mountable design is great for rough terrain. The Gold Bug 2 is a manual ground balance unit. Weight including two 9V batteries 2.9 lbs. The unit can be purchased stock with either the 10" elliptical coil or 6.5" elliptical coil, or both. Two accessory coils are available for the Gold Bug 2. Details here.
Steve's Opinion - An excellent example of a niche machine that excels at one task. The Gold Bug 2 has extreme sensitivity to small gold combined with what I feel is the best physical design of any nugget detector on the market. Lightweight, tough, and convertible from rod mount to chest or hip mount. Its main drawback is that it gets poor depth on larger gold in mineralized ground. As in poorer than any other nugget detector listed here. It is also a harder for beginners to learn than newer units since it has no automatic ground tracking or ground "grab" options. The GMT above is a better choice for all around performance. But if mastered and paired with the small 6" coil no detector will hit smaller gold. The Gold Bug 2 has a particularly effective "Iron ID" mode that not only rejects iron targets but many iron hot rocks. I consider my Gold Bug 2 my "go to" detector if I simply want to find some gold. I can hit tiny pieces weighing less than 1/10th grain with the 6" coil. A Steve's Pick.
Minelab Gold Monster 1000 ($799, 45 kHz) – The Minelab Gold Monster 1000 is new for 2017. The model is replaces the Minelab Eureka Gold as a much lighter and less expensive detector. Main features are a hot 45 kHz frequency combined with automatic ground tracking and even an automatic sensitivity option. The Minelab Gold Monster comes with both 10" elliptical and 5" round DD coil plus rechargeable and standard AA battery packs (AA batteries not included). Details here.
Steve's Opinion - I have been a little surprised how I took to the Gold Monster 1000. My early review here. This has been based more on its grab and go simplicity than anything else. The excellent sensitivity to small gold and efficient ferrous trash identification make it a perfect adjunct to my GPZ 7000. There are some reports from early owners of coil knock sensitivity issues that I find disconcerting however, making it hard for me to recommend the machine unreservedly at this time. More here and here also on that issue. Still, from my own use I could hardly be more pleased with the Minelab Gold Monster. My tuning tips here.
White’s MXT Pro ($823, 14.7 kHz) – The MXT units are general purpose detectors with a proven history of finding gold nuggets. The 14.7 kHz frequency makes it more sensitive to gold and jewelry than most coin detectors. The MXT has full-range target ID circuitry with LCD readout. This makes the MXT a very good coin, relic, and jewelry detector. Weight including eight AA batteries 4.3 lbs. The stock coil is a 9.5" round concentric. Over sixteen accessory coils are available for the MXT (White's, Detech, Sun-Ray). The MXT All Pro has a 10" DD coil and adds tone ID, ground grab, and backlight. Details here.
Steve's Opinion - What can I say? The MXT has found many hundreds of ounces of gold at Ganes Creek, Alaska. While not as hot on tiny gold as it's cousin, the GMT, the MXT actually is smoother operating in mixed hot rocks than the GMT, allowing faint signals from large, deep nuggets to be more easily discerned. For hunting hot ground the 6" x 10" DD coil is a better choice than the stock concentric coil while the 4" x 6" Shooter DD coil is the way to go to enhance the MXTs small gold capability. Nothing has changed as regards the MXT capability, but White's no longer marketing the lower price basic MXT model now makes the MXT one of the more expensive general purpose options. I think the intent was to have the newer and less expensive MX Sport completely replace the MXT but the MX Sport has had no discernible adoption in the prospecting world.
Minelab Equinox 800 ($899, 5, 10, 15, 20, 40 kHz plus Multifrequency) – The Minelab Equinox 800 has just been announced. It includes a dedicated Prospecting Mode with up to 40 kHz operation. Details here.
Steve's Opinion - Too soon to know.
White's TDI SL ($1189, Pulse) – This detector from White's Electronics is a variation on the original TDI. Nugget detecting was a main focus of its design although it has other uses as well. Weight including battery is only 3.5 lbs. with the 12" coil. It uses industry standard coils. Over 100 accessory coils are available for the TDI SL (White's, Minelab, Coiltek, Nugget Finder, Razorback)! And more coils are being released every year. Details here.
Steve's Opinion - The TDI SL has a unique set of features and performance at a very reasonable price point. The fact that it is compatible with the large base of existing Minelab PI prospecting coils is a huge plus. I honestly like the TDI SL a lot because of its light weight and aggressively low price but I wish it had more horsepower. In moderate to low mineral ground I think the White's GMT is the better option, with the TDI SL only really showing its stuff under severe ground conditions. Be aware that a good VLF may serve as well for less money than a PI detector - see the note below.
A note on PI detectors. It is important to note the TDI is a pulse induction (PI) unit, like the Garrett ATX and the Minelabs below. This means it has rudimentary discrimination compared to VLF units. It is best to view PI units as all-metal, dig-it-all detectors. They do have some limited discrimination capability, but it is not why you get a PI unit. Depth in extreme mineralized ground and an ability to ignore difficult hot rocks are the selling points. In addition, some PI units have poor sensitivity to small gold compared to VLF units, and so someone with less expensive VLF unit can run circles around someone with a PI unit at low mineral locations. I tend to consider PI units as elephant hunting guns, best used when larger nuggets are known to be lurking in an area. New PI detectors are challenging my perception in that regard however. Some areas demand PI detectors regardless of gold size due to extreme mineralization and/or hot rocks. My basic recommendation for most people is use a VLF when you can, and use a PI when you have to. You first clue to when this will be is when you basically can't get your VLF to work properly due to ground and hot rock conditions. In much of the US a good VLF is perfectly suitable and often a better choice than a PI. However the western US and most of Australia has places where a PI is an absolute necessity.
XP DEUS ($1250, 4 kHz, 8 kHz, 12 kHz & 18 kHz) – The XP DEUS is a new detector from France that is seeing rapid adoption in the U.S. It can be operated in any one of four different frequencies and has perhaps the fastest recovery time between targets of any detector made today. The DEUS is noted for being completely wireless with the coil independent from the control units and headphones. The detector is exceptionally light at only 2.2 lbs. and with the wireless control box dismounted the rod and coil only weighs 1.96 lbs. The stock coil is a 9" DD round. Two accessory coils are available. Several versions of the detector are available from $949.00 to $1899.00. Price listed here is for DEUS with FX-02 wired headphones + remote + 9" coil. Details here.
Steve's Opinion - The XP DEUS has a dedicated prospecting mode called the Gold Field Program. It is a fantastic piece of technology, programmable for many detecting tasks, and ground breaking in its use of wireless technology. The XP DEUS is currently regarded as one of the best detectors available for working exceptionally trashy locations and for this reason it may be good from extracting gold nuggets around old camp sites and other locations littered with nails and other junk. The extreme light weight certainly appeals. The Version 4 update added improvements to the Gold Field program and the option of two additional High Frequency (HF) coils. The DEUS outfitted with one of these new coils will give the best VLF prospecting detectors a run for the money, as I personally reported here. Unfortunately adding one of these coils also adds about $400 to the price above. The DEUS is not a detector I would buy specifically for gold prospecting - If all you want is a prospecting detector there are other VLF options for far less money. If you want a DEUS anyway however (for coin, jewelry, and relic detecting) and want to use the new HF coils to search for gold, rest assured the DEUS can do the job as a VLF prospecting detector. My real hope is for a version sold specifically as a gold prospecting detector with the HF coil as stock at a much lower price.
Garrett ATX (List $2120, Pulse) - This new model takes the AT series to a new level with pulse induction. It features an extremely compact military grade housing submersible to 10 feet. Even the built-in speaker is waterproof. Note that the unit itself may be submerged but if you want to put your head underwater you will need optional submersible headphones. The ATX features a unique collapsible/folding design for stowing and backpacking. It is powered by eight AA batteries. The ATX comes with a newly designed 10" x 12" DD coil and weighs 6.9 lbs. Two accessory coils are available. Details here.
Steve's Opinion - The ATX is a great addition to my working collection of detectors. The ATX is a very versatile detector and fully capable of almost any task a person wants to use it for. The ATX is a superior beach detector and one of the better pulse induction nugget detectors currently available. It is sensitive to gold nuggets weighing as little as 0.1 gram and yet has very respectable depth on larger gold nuggets. I think the ATX has a performance edge over the TDI SL but at twice the price and twice the weight it has not set the prospecting world on fire. The main problem is the heavy waterproof housing driving the price up so high that in Australia the ATX does not compare favorably to the much more popular Minelab models. In the U.S. it has settled into being most used for beach and relic detecting. Mine goes along as a backup for my GPZ 7000 while gold prospecting but it actually sees more use with me as a beach detector. I have tried for years to convince Garrett to make a light weight less expensive dry land version of the ATX but so far to no avail. At this point unless having a waterproof detector is critical to your needs, spending the little more money to get a Minelab GPX 4500 makes more sense.
Minelab GPX 4500 ($2699, Pulse) - This Pulse Induction (PI) unit essentially ignores ground mineralization and most hot rocks. The GPX 4500 is designed specifically for nugget detecting and so it has many adjustments for mineralized ground not available on other PI detectors. The 4500 weighs 5.3 lbs. not including the harness mounted battery, which weighs another 1.7 lbs. The detector comes with both an 11" round DD coil and 15" x 12" mono coil. Over 100 accessory coils are available for the GPX 5000 (Minelab, Coiltek, Nugget Finder)! And more coils are being released every year. Details here.
Steve's Opinion - Minelab just reintroduced the GPX 4500, a prior model to the GPX 5000 below. Currently it is being offered with two coils for only $2699 which represents a fantastic amount of performance for less than half the price of the GPX 5000. The main thing lacking on the GPX 4500 that the GPX 5000 offers is the Fine Gold timing. This is a setting that eliminates the most troublesome hot rocks and ground while still getting most of the gold. You also get the Salt Gold and Coin/Relic timings plus the Enhanced timing has been improved on the 5000. However, $3000 more for these differences is a bit much and in my opinion the GPX 4500 now represents the best "bang-for-the-buck" option available for those wanting a powerful pulse induction prospecting detector.
Minelab SDC 2300 ($3750, Pulse) - New for 2014 this model is unique as Minelabs first waterproof pulse induction metal detector. A key feature is that the detector is physically packaged in the proven F3 Compact military housing that is waterproof to ten feet and folds down into an incredibly compact package only 15.7" long and weighing 5.7 pounds including four C cell batteries. Details here.
Steve's Opinion - I have used the Minelab SDC 2300 for a over a year now and I must say I am very impressed. The waterproof compact design is perfect for hardcore backpack style prospecting. The main thing however is that the SDC 2300 comes as close to VLF type performance on small gold as you can get while being almost impervious to the ground mineralization and hot rock issues that plague said VLF detectors. In fact, the SDC 2300 will find gold nuggets smaller than most good VLF detectors can detect even under favorable conditions. The SDC 2300 is also one of the simplest detectors to use and master on the market. The main caveat is that the detector is optimized for small gold with the hardwired coil and so other ground balancing PI detectors are a better option for large nuggets at depth. It is also nearly twice the price of the Garrett ATX above and so you are paying quite a premium for a little better performance on small gold. Still, for novices in hot ground that can afford the price, the SDC 2300 is almost impossible to beat if the goal is just to go find some gold, any gold at all.
Minelab GPX 5000 ($3999, Pulse) - This Pulse Induction (PI) unit essentially ignores ground mineralization and most hot rocks. The GPX 5000 is designed specifically for nugget detecting and so it has many adjustments for mineralized ground not available on other PI detectors. The GPX 5000 is the culmination of over 10 years of innovation in pulse induction technology. The GPX weighs 5.3 lbs. not including the harness mounted battery, which weighs another 1.7 lbs. The detector comes with both an 11" round mono coil and 11" round DD coil. Over 100 accessory coils are available for the GPX 5000 (Minelab, Coiltek, Nugget Finder)! And more coils are being released every year. Details here.
Steve's Opinion - It is simple. The Minelab GPX 5000 is the safe choice for best all around pulse induction gold prospecting performance. It has been out for many years, is well proven and reliable, and has a vast selection of coils and accessories to cover almost any situation. Despite the new GPZ 7000 below this is still the unit most people should be looking at though the even lower price GPX 4500 above should also be considered. A Steve's Pick.
Minelab GPZ 7000 ($7999, ZVT) - The new Zero Voltage Transmission technology from Minelab promises to take gold prospecting to the next level. The new platform represents a break from the past SD/GP/GPX series in more ways than one, with a new weatherproof housing design based on the Minelab CTX 3030. The GPZ 7000 weighs 7.32 lbs. and comes with a waterproof 14" x 13" coil. There is one accessory coil available at this time. Details here.
Steve's Opinion - The GPZ 7000 represents the future and I am convinced it offers a performance edge when compared to the earlier Minelab PI detectors. For this reason I have sold my GPX 5000 and switched fully to the GPZ 7000. The only weakness the machine seems to have at this time is an inability to deal quietly with wet saturated salt or alkali ground and certain volcanic hot rocks. That said I have not regretted for one second selling my GPX 5000 due to the overall advantage I feel I get with the GPZ 7000 in my ground and on my gold.
A note on multi-frequency detectors: Most VLF detectors process a single frequency which is quoted as a key specification on gold nugget detectors. In general, higher frequencies are more sensitive to small gold. There are detectors on the market that process multiple frequencies, most notably a number of Minelab models (ETRAC, CTX 3030) but also a few other manufacturer models such as the Fisher CZ-3D or White's V3i. There is an assumption made that these units will detect gold nuggets as well as single frequency detectors because they do process some higher frequency signals. For various reasons this does not prove to be the case. Although these models can certainly find gold items none of them are any better than most general purpose coin detectors at finding gold nuggets. In fact, they are usually a poorer choice. The V3i is a special instance because unlike the Minelab or Fisher multi-frequency detectors it can also be run on any single frequency, in this case the 22 kHz frequency for gold. The lesson here is do not fall for marketing hype and believe that multi-frequency offer the best performance on all targets. They do not.
If I can offer one final word of advice, it would be to pay particular attention to what experienced nugget hunters are using in any particular region. Do not assume you are going to outsmart them and find some model they have not already tried and set aside as less than optimum. Serious prospectors in any particular location will end up focusing on certain units that do the job. In areas of extreme mineralization this is usually a PI detector. In areas with less mineralization and lots of ferrous trash VLF units often are preferred. If you can discover what models the locals prefer it will give you a head start in knowing what to use yourself. Above all, whatever detector you finally choose, dedicate yourself to mastering it. It takes at least 100 hours of detecting to become proficient with a detector model. Any less, and you are still practicing. Knowing your detector well is more important than what particular model of nugget detector you own.
I decided to add something new to this page. The list above has grown so much over the years that even it is really too long for some people. So I have decided to just pick my favorites in the three essential categories that I think every serious prospector should consider:
1. The super hot VLF
2. The medium frequency VLF
3. The ground balancing pulse induction (GBPI).
The explanation that follows gives some rationale for my picks, but a huge factor is a good proven history in the field by many people under a wide range of conditions. Just being the latest new thing does not do it for me as much as being tried and true when it comes to my recommendations for others. It is very wise to wait about 6 months to a year after any new detector is introduced to see how others fare with it in the field before committing your hard won dollars.
I also lean to detectors that are designed just for gold prospecting as opposed to "do-it-all" detectors that may offer nice features, but those features can also get in the way of a person who only needs a gold prospecting detector. And that is the focus here.
Category one is the hot induction balance detector for finding tiny gold nuggets no other detector can find. These would be detectors running over 30 kHz. Contenders are the Fisher Gold Bug 2 at 71 kHz, Makro Gold Racer at 56 kHz, Minelab Gold Monster at 45 kHz, and White's GMT at 48 kHz. My pick is the Fisher Gold Bug 2 with 6" coil. It is lightweight, tough, and gets the job done like no other. The GMT is the runner up and a choice for those who need automatic ground tracking. The new Minelab Gold Monster 1000 bears watching to see how it sorts out.
Category two is the medium frequency VLF. The main goal here is to have a detector that can punch deeper on large nuggets in bad ground than the super hot VLF detectors and do a good job of discriminating out ferrous trash. These would be the good detectors for working trashy campsites and tailing piles. They are also the detector for a person wanting more versatility for other detecting tasks than offered by the dedicated high frequency detectors. The potential contenders list is very long - see above. For now my pick for this category is the Fisher Gold Bug Pro but the Nokta FORS Gold+ bears close study as a possible alternative. If you need waterproof the Garrett AT Gold is the obvious choice but the newly announced Minelab Equinox may end up as a viable option in that area also.
Category three is a detector to handle the worst hot rocks and bad ground. For many serious prospectors this will be the primary unit, the one to find gold with. The obvious choice here is a Minelab GPX 5000. This detector is the culmination of years of development by Minelab and it has incredible aftermarket support in the form of coils and other accessories. For those with the money and a desire to be on the cutting edge of new technology the Minelab GPZ 7000 is an alternative but for now a GPX 5000 is a safer choice for a wider range of conditions. Those who want a GPX 5000 and who can't quite afford it should instead consider the GPX 4500 at half the price. If a GPX is too intimidating, then the Minelab SDC 2300 may be just the ticket.
Steve's Short List of The Prospecting Metal Detectors September 2017
Fisher Gold Bug 2 with 6" Coil (category 1, small gold sniper)
2. Fisher Gold Bug Pro (category 2, basic general purpose prospecting)
3. Minelab GPX 5000 (category 3, ground balancing pulse induction)
In my opinion a well equipped prospector needs two detectors. One a high power GBPI for most nugget detecting and a VLF for trashy areas and as a backup. A GPX 5000 plus a Gold Bug Pro or Gold Bug 2 would be a hard combination to beat.
A special note of the Minelab GPZ 7000. This detector represents a fourth category, the "hybrid" detector that uses continuous wave technology like a VLF but also employing time constants much like a PI detector. These detectors act like a "Super VLF" with the ability to detect gold missed by GBPI detectors but with the ability to get depths on par or exceeding those previously seen only with GBPI detectors. I believe this technology represents the future of metal detecting and so have gone all in with it myself. The GPZ 7000 is my personal choice for nearly all nugget detecting. It overall is the most powerful metal detector I have ever used for nearly all types of gold a person may be after. I only hesitate recommending it overall because of the high price tag and teething pains evident in all new technology. The GPX 5000 is the safe choice. Still, the GPZ 7000 is cutting edge technology which is where I want to be, so for me at this time I am using the GPZ 7000 with a VLF for backup/trashy areas.
So there you are. Hopefully this helps some people out. I can be found daily on the Detector Prospector Forum and would be pleased to answer any questions you have on metal detecting and prospecting. Also check out Steve's Guide to Metal Detecting for Gold Nuggets.
Steve's Mining Journal
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