Premium Gold Test Stone-Thick-Made in the USA- 2-1/2" X 1-1/2" X 1/2" Prop 65 - Rubber-Phthalates Quatro also offers additional remote

Quatro also offers additional remote control options that plug directly into certain Quatro systems with control panels

the bowl remains in continuous contact with the pad—keeping your setup stable and secure throughout the process

702 3 mm (0

The rolled edge profile provides smooth

Premium Gold Test Stone-Thick-Made in the USA- 2-1/2" X 1-1/2" X 1/2" Prop 65 - Rubber-Phthalates Quatro also offers additional remoteA professional grade gold testing stone for precious metal identification, this thick touchstone is made in the USA from natural Arkansas black novaculite a premium material quarried and cut domestically. At 2 1 2" 1 1 2" 1 2", the generous thickness provides a durable, long lasting testing surface suited for daily bench use. Also referred to as streak stones or touchstones, this tool is a trusted standard for jewelers performing acid based precious