Feature

●ACCURATE GOLD AND SILVER CONTENT VERIFICATION: Our professional hardness testing equipment is designed to help you verify the precise gold and silver content in any item, including jewelry, coins, and antique collectibles.
●EASY-TO-USE: Our testing method is simple and straightforward - just apply a drop of acid to the touchstone and observe the color change. Real gold and silver will stay on the touchstone, while fake ones will dissolve or oxidize to blue.
●VERSATILE TESTING: Our kit is suitable for testing any gold that you think is 10K, 14K, 18K, 22-24k, silver, and platinum purity. It is perfect for testing jewelry, coins, antique gold, silver, and platinum collections.
●PORTABLE AND COMPACT: Our testing equipment is available in two sizes, S (7.6cm/3in x 3.8cm/1.5in) and L (9.9cm/3.9in x 5.2cm/2in), making it easy to carry with you wherever you go. Perfect for jewelry stores, pawn shops, and collectors.
●HIGH-QUALITY MATERIALS: Our touchstone is made from high-quality materials to ensure durability and reliability. Provide you with good quality experience. You can trust our kit to provide accurate results every time.

[L 20L]

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:
Item Type: Touchstone
Material: Stone
Color: As pictures shown
Size: S, L (optional)
Size Length Width S 7.6cm / 3in 3.8cm / 1.5in L 9.9cm / 3.9in 5.2cm / 2in
Package list:
1 * Touchstone