Premium Gold Test Stone-Made in the USA 2-1/2" X 1-1/2" X 1/4" Gold & Platinum Stock Wire & Tubing Variety of pin types to

Variety of pin types to accommodate different workpiece geometries

Featuring a precise interlocking diamond-shaped texture on the jaws

one end 2mm–4mm

Ideal for knife edge serrations and checkered grip patterns

Premium Gold Test Stone-Made in the USA 2-1/2" X 1-1/2" X 1/4" Gold & Platinum Stock Wire & Tubing Variety of pin types toPremium Gold Test Stone Made in the USA 2 1 2" 1 1 2" 1 4" This top quality gold testing stone is an essential tool for precious metal identification. Made from natural Arkansas black novaculite quarried and cut in the USA, it is also commonly referred to as a streak stone or touchstone. Unlike cheap imitations made of glass that quickly stain and degrade, this premium stone is built to deliver reliable, long lasting performance in professional