GTE *White* 2''x2'' Testing Touchstone Streak Stone for Gold Silver Jewelry Precious Metal Sterling Acid Solutions 10K 14K 18K 22K .999 24K

The GTE White 2" x 2" Precious Metal Test Stone is designed for use with testing acids to help determine the purity and karat value of gold, silver, and platinum jewelry, scrap metal, coins, bars, and more.

Unlike traditional dark testing stones, the natural white surface provides a bright background that makes it easier to see color reactions and metal dissolution during testing.

To test your item, simply make a small scratch on the testing stone using the piece being tested. Apply a drop of testing acid to the streak and observe the reaction to help identify the metal content.

The stone features a rubber backing that provides a stable, non-slip surface for safe and accurate desktop testing.

This testing stone is ideal for jewelers, pawn shops, precious metal buyers, collectors, and anyone who regularly tests gold, silver, or platinum.

This kit includes

• GTE White 2" x 2" Precious Metal Test Stone with rubber backing for non-slip testing
• Easy-to-follow instruction sheet

A must-have tool for anyone who buys, sells, or evaluates precious metals.