All Categories
Get it between 2025-02-27 to 2025-03-06. Additional 3 business days for provincial shipping.
Genuine and natural obsidian
Jet black, for the highest contrast
Smooth surface is the best way to test gold
Convenient 2" x 2" surface size
This high quality Gold and Silver testing stone can be washed and used again for hundreds of tests. It is designed specifically for testing and leaves a very visible streak when testing gold, silver, and platinum. It will not damage the pieces you are testing Rosenthal Collection is a registered trademark protected by US Trademark Law.