Feature

●Acid changes color based on purity. Very easy to use
●Apply a drop of acid test with Touchstone, real gold stays in the Touchstone and fakes will be oxidized into melt or blue
●Perfect for jewelry, coins, antique gold, silver and platinum testing
●This solution helps test gold that is thought to be pure in 10K, 14k, 18k, 22-24k, silver, and platinum
●This touchstone is used to check the content of the gold on the item


Description

Specifications:
Item Type:Touchstone
Material: Stone
Color: Black
Size: 2.80*1.69*0.24inch/7.1*4.3*0.6cm

Package includes:
1PC Gold Test Stone