This specially designed high quality testing ultra white test 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.
This stone has a rubber backing and is brand new in the original PuriTEST Box! In comparison to the black 2x2 stone, the ultra white PuriTEST stone has increased color change visibility!
Genuine PuriTEST Premium 2x2" PRO TOUCH Testing Stone
