Wholesale Only
Service: 
800.575.4007

Natural Obsidian Test Stone

Natural Obsidian Test Stone (7494)

0.00 stars, based on 0 reviews
Natural obsidian test stones give precise readings when testing for gold purity. Obsidian is a volcanic glass produced when lava becomes cold. It is been used for years to make the sharpest knives. Obsidian test stones, on the contrary to rougher...
Show
Reviews 1-0 of 0
Reviews 1-0 of 0