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

Features

• 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!
• 3 Convenient Portable Stones Included– Sizes: Small 2”x”2, Medium 4”x2” and Large 6”x3”
• Each Genuine GTE Black and White Test Stones includes a Rubber Backing for Non-slip Desktop Testing!
• BONUS- GTE Neutralizer included to clean each stone. *Washable* These Test Stones Can be Used for Hundreds of Tests!