Large Gold Test Stone Natural Stone - 6" x 4" Adhesives Process step: use after electrocleaning

Process step: use after electrocleaning — rinse thoroughly before proceeding to plating

It is recommended for use on precious and non-precious metals

Highly polished surface for smooth

(4) AA batteries

Large Gold Test Stone Natural Stone - 6" x 4" Adhesives Process step: use after electrocleaningThe Large Gold Test Stone from Eurotool is a natural stone cut to a generous 6" x 4" size, ideal for professional gold testing in a jeweler's bench or assay station. Gold test stonesalso known as touchstonesare used to assess the karat or purity of gold alloys by observing the streak left when metal is rubbed across the stone's fine grained surface. The larger format of this stone provides ample working area, allowing multiple test streaks to be