Best Gte Gold Testers in 2026

18K Yellow Gold

Use for AGT1, AGT2, AGT3 & AGT-Blue & Kee Gold Tester

6.4mm (1/4") wide

This touchstone is used to verify the gold content in items

Apply a drop acid test on touchstone, real gold will stay on the touchstone, fake one will be dissolved or oxidized to blue

This solution works for testing any gold which you believe to be 10K, 14K, 18K, 22-24K, silver, and platinum pure

SILVER TESTING KIT: Easily test the purity of silver with ToolTreaux’s Silver Testing Acid Solution Kit with Testing Stone! The kit includes two, 0.5oz shatterproof plastic squeeze bottles and one testing stone; the testing solutions are potent, effective and will see you through hundreds of future tests!

SILVER TESTING KIT METHOD: This silver testing method is best used on silver that is yet to be smelted, due to the harsh nature of the solution that could potentially damage an already finished item; if testing fine jewelry, sterling silver items or other finished items, be sure to choose an inconspicuous spot so as not to compromise the finished piece

HOW THE SILVER TESTING KIT WORKS: To test silver purity, scratch the item on to test stone leaving visible deposit, then place a small drop of the acid over deposit; the purity of the silver is approximated depending on the color the solution turns when applied to deposit; if solution turns red that indicates high quality silver; if solution turns blue or green the sample may contain brass or copper; if sample deposit dissolves, or solution turns a dark brown, it may be a base metal

Ideal for testing jewelry, coins, antique gold, silver, collectibles

This touchstone is used to verify the gold content in items

This solution works for testing any gold which you believe to be 10K, 14K, 18K, 22-24K, silver, and pure

Touchstone---This touchstone is used to verify the gold content in items. Ideal for testing jewelry, coins, antique gold, silver, platinum collectibles.

How to Use---Dripping a drop of gold test water on your jewelry sample, the real gold will stay on the touchstone, fake will be dissolved or oxidized to blue. Acid changes the color based on purity. Very easy to use.

Function---This solution works for testing any gold which you believe to be 10K, 14K, 18K, 22-24K, silver, and platinum pure. Test stones are used to test your gold jewelry without ruining it, by using the stone to test instead of directly on the piece.

✅【High Accuracy】 The Diamond&Moissanite Tester is designed to help you quickly determine diamond and moissanite from other fake stones

✅【User-Friendly】: Diamond Detector is easy to operate, hold the meter in 90 Degree position to insert to the surface of diamond, then Green light(diamond) or Blue light(moissanite) will appear on the indicator

✅【High-precision chip】Diamond Tester is able to detect metal, the inditor will appear orange signal if touch metal material. If without this function, other testers selling on amazon can indicate a real diamond when you unknowingly touch the setting even if the diamond is fake.

INCLUDES: NiMH rechargeable batteries, AC adapter/charger, loose stone holder, and compact rubberized portable storage case

Identifies, Detects and Separates Moissanite from Diamond, New Advanced Exclusive Moissanite Testing Technology

Identifies the widest range of electrically conductive moissanite material including the new super low electrically conductive moissanite

Suitable for jewelry display or identification assistance.

The torch can directly display the light color effect under the tester of diamond and then to evaluate the quality of diamond.

Made of quality material, which is eco-friendly and durable to use.

Package List - This solution works for testing any gold which you believe to be 10K, 14K, 18K, 22-24K, silver, and platinum pure

Practical Jewelry Making Accessory - Two size Gold Detecting Stone, Test Stone is used to verify the gold content in items

How to Use - Apply a drop acid test on touchstone, real gold will stay on the touchstone, fake one will be dissolved or oxidized to blue

SILVER TESTING KIT: Easily test the purity of silver with Silver Testing Acid Solution Kit with Testing Stone! The kit includes two, 0.5oz shatterproof plastic squeeze bottles and one testing stone; the testing solutions are potent, effective and will see you through hundreds of future tests!

SILVER TESTING KIT METHOD: This silver testing method is best used on silver that is yet to be smelted, due to the harsh nature of the solution that could potentially damage an already finished item; if testing fine jewelry, sterling silver items or other finished items, be sure to choose an inconspicuous spot so as not to compromise the finished piece

HOW THE SILVER TESTING KIT WORKS: To test silver purity, scratch the item on to test stone leaving visible deposit, then place a small drop of the acid over deposit; the purity of the silver is approximated depending on the color the solution turns when applied to deposit; if solution turns red that indicates high quality silver; if solution turns blue or green the sample may contain brass or copper; if sample deposit dissolves, or solution turns a dark brown, it may be a base metal

EASY READING RECORDING-This stone is used in conjunction with Gold test acids to determine if solid gold and karats. Smooth Black Glass Surface for easy reading of the test acids on this stone. This solution works for testing any gold which you believe to be 10K, 14K, 18K, 22-24K, silver, and platinum pure.

SAFE AND PERTECT-Test stones are used to test your gold jewelry without ruining it, by using the stone to test instead of directly on the piece. Apply a drop acid test on touchstone, real gold will stay on the touchstone, fake one will be dissolved or oxidized to blue. This touchstone is used to verify the gold content in items.

TOUCHSTONE-This touchstone is used to verify the gold content in items. Ideal for testing jewelry, coins, antique gold, silver, platinum collectibles. Acid changes color based on purity. Very easy to use. The natural black stone is particularly resistant to acidity, and the gold color is particularly easy to rub on the stone.