Set of 4 Gold Silver Platinum Jewelry Tester Scratch Streak Stones to use with Acid Test Kits 10K 14K 18K 22K 24K Minerals Precious Metals Detector

These EASY to use genuine lot of 4 GTE Acid Scratch Test Stones are a convenient tool to use with testing acids to determine the karat value and purity of Gold, and Silver Jewelry, scrap, bars, coins, and much more! Simply clean with acid neutralizer or a baking soda/water rinse between testing.  This 5 Piece kit includes: GTE Black 3''x6" Test Stone GTE Black 2''x4'' Test Stone GTE Black 2''x2'' Test Stone GTE White 2''x2'' Test Stone GTE 1/2 oz Neutralizing Solution Easy to follow instruction booklet with color chart! Each with rubber backing to ensure non-slip desktop testing! (Note: Testing acids sold separately) Easy and Safe! Protects your Jewelry and Precious Metals During Acid Testing! Simply Scratch the Test Stone with your Jewelry then Apply a drop of the Acid to the Stone and Watch the Results Appear! Use with Jewelry Testing Acids to Determine the Karat Value and Purity of Gold, and Silver Jewelry, scrap, bars, coins, and much more! *Washable* These Test Stones Can be U