Large Gold Test Stone Natural Stone - 6" x 4" Prop 65 - Ceramic engineered for compatibility with Foredom's

engineered for compatibility with Foredom's four square drive handpieces exclusively

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and 15mm diameter

they offer the ideal feel

shielded ball bearings Drive Type Square drive (H-type only) Chuck Key Included

Large Gold Test Stone Natural Stone - 6" x 4" Prop 65 - Ceramic engineered for compatibility with Foredom'sThe 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