Top 10 Best metal tester in 2026

Last Updated - 6/23/2026

🏆Best Choice

WELLZEER

WELLZEER Keychain Magnet for Testing Brass,Keychain Pocket Magnets for Purse with Strong Magnetic Rare Earth Neodymium,Gold,Silver, Jewelry,Ferrous Metals Test Magnet (2PACK-D12mm)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•✅ Premium quality brass test magnet for jewelry dealers, metal recyclers, brokers, antique buyers and collectors! WELLZEER Keychain magnet is also very convenient and easy-to-carry to test for iron, nickel, or cobalt content.
•✅ Identify fake/plated jewelry, where steel or nickel alloys is often the base matal.
•✅ Identify/sort chrome plated items from silver, polished aluminum, and non-magnetic grades of stainless steel.
•✅ Identify and sort solid brass and bronze from steel-plated items.
•✅ Size: 0.47" x 1.57 " Package: 2 pack/box. Pull power: 3 pounds. Super strong metal magnet keychain split ring pocket keyring hanging holder.

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$6.99

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Hqdz

Diamond Tester,High Accuracy Jewelry Diamond Tester Professional Diamond Tester Pen Jeweler Tool for Novice and Expert - Diamond Selector II 9V Battery Included(Black Diamond Testers)

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•[Fast and safe ]:Professional Diamond Selector II will indicate genuine diamond or fake.It is designed for quick, precise, and safe diamond testing.LCD display & LED indicator.Uses large / small switches for testing diamonds,Emits audible sounds to easily differentiate the readings.
•[Bare Hands Operation]:All the tests must be done by your bare hands. If you put on your gloves, the metal alert will not function since a normal moisture levelof your hands is necessary for operation.All test must be done by TWO hands, one for hold the diamond and one for the diamond tester. As for the hand which hold diamond tester, you have to touch the electricity conductive panel on the back of the unit.If you test the diamond just by one hand, you will get a wrong result.
•[Beeping Upon Startup]:Ensure correct installation and adequate power in the test pen battery. Also, clean the test pen probe as maintaining its cleanliness can enhance testing efficacy.A beeping sound upon powering on signifies the need for initialization settings. Consult the table on the rear of the machine for the specific initialization settings considering the diamond's temperature and size. Adjust the initial number of illuminated lights by rotating the knob (the default setting is to have 4 lights illuminated at room temperature).
•[High-Frequency Sound when Testing Metal]:The high-frequency sound during metal testing is due to the test pen's operational principle, which relies on thermal conductivity to distinguish between diamonds and fake gemstones. Since metal possesses thermal conductivity similar to diamonds, it generates a high-frequency sound during testing.
•[Simple to Use]:Hqdz Diamond Tester Pen is simple to operate to get results, professional(s) are not required. Simply turn on our Diamond Tester Pen detector; place the tip of the Diamond Tester on the gem stone (lightly pressed is sufficient) and If the stone is fake, crystal or cubic zirconia, the tester will not beep.
•[ Note]: The battery temperature is lower than 10 degrees Celsius, which seriously affects the use time Don't wear gloves，Don't detect metal Best to measure in no wind conditions，The operating temperature is within the range of 10-35 degrees Celsius, and the humidity is below 80% When testing diamond, your right index finger must keep touching the metal panel on the back of the tester. Please turn off the power after the test to save power.
•[Package include]:Diamond tester is battery powered for convenience.Requires 1 standard 9v battery, which is included.Package include:1 x Diamond Tester,1 x Leather Pouch Case,1 x Testing Platform,1 x User Manual,1 x DC 9V battery.

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$15.99

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VSKIZ

VSKIZ Keychain Magnet for Testing Brass, Pocket Magnet Key Chain with Strong Magnetic, Black Key Holders for Jewelry Father's Day Gift, Precious Metal Verifier for Gold & Silver Test -2 Pack

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•【Precious Metal Verifier】- VSKIZ keychain magnet utilize the magnetism of nickel and steel to identify chrome plated items from silver, polished aluminum, and non-magnetic stainless steel materials, and solid brass and bronze from electroplated steel items
•【Jewelry & Coin Tester】- Use magnetic testing to quickly identify counterfeit or electroplated jewelry. Due to the fact that counterfeit jewelry usually contains steel or nickel, which has magnetism and is easy to adsorb, the authenticity of coins and jewelry can be preliminarily determined
•【Practical Magnetic Keychain】- Pocket Magnet key chain have small size, light weight, and are easy to carry. When going out, you can directly put the magnet key holders in your pocket or wallet, which is not only not easy to lose, but also very convenient for daily testing of iron, nickel, or cobalt at any time
•【Superior Quality Magnetic Key Chain】- Rare earth keychain test magnets use premium neodymium iron boron magnets and high-quality electroplating protective layer. Neodymium magnet key holders has strong wear resistance and corrosion resistance, long service life, and can be reused multiple times. Key chain for testing brass are suitable for jewelry dealers, metal recyclers, brokers, antique buyers, and collectors!
•【Widely Applications】- Gold testing keychain magnets can also be used for refrigerator magnets, whiteboard magnets, office magnets, process magnets, DIY magnets, miniature models, 3D printing projects, science, industry, educational needs, jewelry production, home decoration projects, fixation, salvage, and distinguish for stainless steel. Exquisite packaging is the best choice for giving to relatives or friends.

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$4.99

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YukaBa

YukaBa Keychain Magnet Tester for Gold, Silver, Jewelry & Precious Metals with Rare Earth Neodymium Magnets (2 Pack)

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•【Product Size】0.47 x 1.57 inches with N40 Neodymium Magnets; Package: 2 pack; Pull Power: Over 2 pounds per magnet, 8 pounds for the pair. This gold testing magnet is the perfect size and strength for identifying fake silver and gold jewelry!
•【Jewelry & Coin Testing】Identify fake/plated jewelry, which often has steel or nickel alloys as the base material (some alloys, like nickel-silver and German silver are non-magnetic, despite having ferrous metals present). Generally, the magnet test is only the first test performed when verifying the authenticity of coins and jewelry, before density and acid testing.
•【Precious Metals Testing】Identify/sort chrome plated items from polished aluminum, silver, and non-magnetic grades of stainless steel (chrome plating requires a nickel layer, which is magnetic). Identify and sort solid brass and bronze from steel-plated items (handy in the antique market and hardware store).
•【Practical Magnetic Keychain】This magnetic keychain is strong, small, light in weight, and easy to carry. You can put it in your pocket or purse when you go out. It provides you with a versatile multi-functional magnetic testing tool.

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$6.99

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Gemtone

Testing Stone for Gold, Precious Metal Test Acid Silver Jewelry Tester Scratch Value Purity Scrap Platinum Detecting Tool Goldsmithing Tools Portable Making Detection Solutions Stones Coins Antique

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Precise Authentication: The GTE 3"x6" test stone allows for accurate precious metal authentication with its finely crafted grooves and non-slip rubber backing.
•Premium Materials: Crafted to withstand all metal types such as gold, silver, and platinum, this testing stone provides a genuine substrate for scratches every time and allows for easy to read test results.
•Long-Lasting Durability: Built to withstand frequent scratch testing, this reusable stone can be used hundreds of times, making it a cost-effective solution.
•Convenient Sizing: Measuring 3"x6", this compact yet functional test stone fits easily on any desktop workspace for on-the-go authentication.
•Triple Metal Testing: Made of natural materials, the deep black color allows viewing color changes while testing gold, silver, and platinum surfaces easy! This versatile stone allows testing of the most common precious metals professionally or as a hobbyist.

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$9.11

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Salcod

Coin Ping Tester - Resonant Ping Sound Detection and Diameter Comparison for Coin Authenticity, Portable and Easy-to-Use, Black

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Coin Ping Tester: This simple device produces some of the purest and most resonant coin sounds ever for analyzing and verifying the authenticity of coins. A caliper measures the coin's diameter and compares it to standard sizes to help validate its authenticity. It is suitable for coins of all sizes, from 1/10 AGE to 10ozt beasts.
•Premium Materials: The ultra-soft, elastic clamping cap is made from food-grade silicone, designed to protect your coins from damage and specifically engineered for precious metals. Use the included wooden stick to gently tap your coin, producing a crisp, clean, and resonant sound.
•Versatile Use: You can place it securely on a countertop to perform precise tapping and testing using its stable base. Its portable design also makes handheld operation convenient, suitable for quick tests on the go or in various work environments.
•Compatible Applications: The tester can be paired with specialized coin detection apps for detailed analysis and reporting. Compatible apps include Precious Coin Tester, Pingcoin, Bullion Test, and Coin Tester.
•Package Contents: 1 coin ping tester, designed for easy and accurate coin testing

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$25.99

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Envistia

Envistia Mall Keychain Magnet for Testing Gold, Silver, Brass, Precious Metal & Jewelry, Non-ferrous metal verification

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•【Product Size】0.47 x 1.57 inches with N40 Neodymium Magnets; Package: 1 Piece; Pull Power: Over 2 pounds per magnet. This gold testing magnet is the perfect size and strength for identifying fake silver and gold jewelry!
•【Jewelry & Coin Testing】Identify fake/plated jewelry, which often has steel or nickel alloys as the base material (some alloys, like nickel-silver and German silver are non-magnetic, despite having ferrous metals present). Generally, the magnet test is only the first test performed when verifying the authenticity of coins and jewelry, before density and acid testing.
•【Precious Metals Testing】Identify/sort chrome plated items from polished aluminum, silver, and non-magnetic grades of stainless steel (chrome plating requires a nickel layer, which is magnetic). Identify and sort solid brass and bronze from steel-plated items (handy in the antique market and hardware store).
•【Practical Magnetic Keychain】This magnetic keychain is strong, small, light in weight, and easy to carry. You can put it in your pocket or purse when you go out. It provides you with a versatile multi-functional magnetic testing tool.

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$6.59

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Selaginella

Selaginella Upgrade Portable Gold ＆ Silver Coin Tester, Testing Kit with Magnet for Coins, Coin Verification Through Tapping Resonance and Size Comparison for Gold Silver and Platinum

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Professional Multi-Tool Coin Authentication: Designed for silver and gold coins, this kit combines ping resonance testing, magnetic composition checks, and precise size measurement for reliable multi-factor verification.
•Accurate Ping Sound Analysis: Secure your coin in the included holder, release, and compare the clear resonance against authenticity standards—ideal for detecting fakes with ease.
•Magnetic Response Testing: Includes a gold keychain magnet tester to quickly determine metallic composition—genuine silver and gold show minimal magnetic attraction.
•Precision Diameter Measurement: Use the included measuring card to accurately check your coin’s diameter against certified standards for authenticity verification.
•Portable & App-Compatible: Lightweight design for easy carrying and on-the-go testing. Compatible with Precious Coin Tester, Pingcoin, and Coin Tester apps for advanced analysis.

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$22.99

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Sound Money Metals

The Pocket Pinger + Stack Stick, Coin Ping Test (Black, 1 Pack) + StackerTools App

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•The Pocket Pinger - (Black) - Portable and works with all size coins. From the 1/10 AGE all the way to a 10ozt beast. This simple device allows for the purest most resonant coin ping ever in existence. A walk through a flea market and these can instantly pay for themselves. [$35 Value]
•The Stack Stick - Stacks Sticks are made from USA Grown Hickory trees. A solid hardwood that creates a crisp clean and resonant ping. Specifically designed for use with your Precious Metals. A light tap is all it takes. It’s not needed for use with the Pocket Pinger but you’re going to want it. [$6 Value]
•4 x Extra Soft Pincher Caps - These custom fitted ultra soft elastic pincher caps are made with Food Grade silicone. The sound quality you'll hear is exceptional and they're guaranteed to be acid and sulfur free. These 4 extra caps will get you A LOT of extra pings. [$3.80 Value]
•Bonus Digital Video - Exclusive Video Sessions (Games!) Step by step videos showing you how to properly use and get the most from your new gadget. This 30 minute video series is packed with value. Including 3 games to play: Spot The Fake, The Kennedy Challenge, and Grab Bag. These videos will catapult you to recognizing the sound of real money in record speed, even if you've never heard a coin ping before. [$20 Value]
•2 x Bonus eGuides - 14 Ways to Catch a Counterfeit for Under $20 and The Estate Sale Cheat Sheet: Pricing the Game. These two bonuses will help you catch counterfeits and give you a better idea on how much to pay next time you're out hunting for deals. [combined $19 value]

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$35.00

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TAOMEELOR

Coin Ping Tester Kit, The Pocket Coin Ping pinger Tester Kit, Gold & Silver Coin Ping Testing- Coin Validation via Ping Resonance Testing & Size Comparison, Portable & Technical Specifications Style.

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Professional Coin Authentication Solution: Designed for serious collectors and numismatic experts, this advanced system combines acoustic resonance verification with precision measurement for laboratory-grade authentication. The coin verifier analyzes pristine resonant frequencies to detect composition anomalies, while laser-calibrated calipers measure diameter to 0.01mm accuracy against official mint specifications. Capable of handling everything from delicate 1/10ozt fractional coins to substantial 10ozt pieces, it delivers museum-level validation for rare coins, bullion, and collectibles.
•Coin Tester Kit: A comprehensive toolset designed for authenticating silver and gold coins through advanced ping resonance testing. This versatile kit is compatible with leading verification systems including Precious Coin Tester, Pingcoin, and Coin Tester platforms. Perfect for collectors and dealers, it provides reliable multi-factor authentication to ensure your coins' genuineness.
•For comprehensive coin authentication: Secure your silver coin in the included holder for precise ping resonance analysis—the sound profile reveals key authenticity markers. Use the magnetic clasp to test metallic composition; genuine silver exhibits minimal magnetic response.
•System Integration: This tester interfaces with leading numismatic analysis applications including Precious Coin Tester, Pingcoin, Bullion Test, and Coin Tester platforms, enabling advanced spectral analysis and automated reporting features for comprehensive authentication documentation.
•Metal Acoustic Tester - A portable authentication solution for gold and silver coins. Simply secure your coin in the testing chamber and release for instant ping analysis. The compact 4"x5" carrying case fits in any pocket, making professional-grade verification available anywhere.

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$29.99

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