Feature

●Test Items: This solution is suitable for testing any gold you believe to be 10K, 14K, 18K, 22-24K, Silver and Platinum Pure.
●Test Method: Perform the acid drop test on the touchstone, the real gold will stay on the touchstone, and the fake will dissolve or oxidize to blue.
●How to find out: the acid will change color according to the purity, very easy to use.
●Test Method: Perform the acid drop test on the touchstone, the real gold will stay on the touchstone, and the fake will dissolve or oxidize to blue.
●Applicability: Ideal for testing jewelry, coins, antique gold, silver and platinum collections.


Description

Features:
1. This touchstone is used to check the gold content of objects.
2. Apply an acid drop test on the touchstone, real gold will stay on the touchstone, a scythe will be dissolved or oxidized to blue.
3. This solution works to test any gold you believe to be 10K, 14K, 18K, 22-24K, pure silver and platinum.
4. The acid changes color depending on the purity. Very easy to use.
5. Great for testing jewelry, coins, antique gold, silver and platinum collectibles.
Specification:
Condition: 100% brand new
Item type: Stone fingerboard
Material: Stone
Color: As pictures shown
Size: S, L (optional)