[8   x 3  ]

[6   x 2  ]

[2   x 2  ]

[5   x 2  ]

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.