Feature

●[WIDE COMPATIBILITY] - This touchstone works for testing 10K, 14K, 18K, 22-24K gold, as well as silver and platinum. Suitable for testing various jewelry pieces, coins, and collectibles.
●[DURABLE & PORTABLE] - Made from high-quality stone material, this touchstone is built to last. Its compact size makes it easy to carry and use anywhere.
●[EASY TO USE] - Testing the purity of gold is a breeze with this touchstone. Simply apply acid and see how it changes color, indicating the purity. Perfect for both professionals and hobbyists.
●[ACCURATE GOLD TESTING] - Easily verify the gold content in your jewelry and precious metals with this reliable touchstone. Apply acid to the touchstone and observe the to determine if the gold is genuine or fake.
●[VERSATILE APPLICATIONS] - Ideal for testing jewelry, coins, antique gold, silver, and platinum collectibles. Great for collectors, appraisers, and buyers to authenticate precious metals.


Description

Features:
1. This touchstone is used to verify the gold content in items.
2. Apply a drop acid test on touchstone, real gold will stay on the touchstone, fake one will be dissolved or oxidized to blue.
3. This solution works for testing any gold which you believe to be 10K, 14K, 18K, 22-24K, silver, and platinum pure.
4. Acid changes color based on purity. Very easy to use.
5. Ideal for testing jewelry, coins, antique gold, silver, platinum collectibles.

Specification:
Condition: 100% Brand New
Item Type: Touchstone
Material: Stone
Color: As pictures shown
Size: S, L (optional)
SizeLengthWidthS7.6cm / 3in3.8cm / 1.5inL9.9cm / 3.9in5.2cm / 2in
Package list:
1 * Touchstone