This EASY to use genuine JSP/GTE test kit will determine the karat value and purity of Gold, Silver, Platinum, and Diamond Jewelry, scrap, bars, coins, and much more! Simply scratch the test stone with your jewelry, apply a drop of the solution to the scratch mark on the stone, and watch the results appear! This 15 piece kit includes: ALL-IN-ONE GOLD, SILVER, PLATINUM, DIAMOND JEWELRY TESTING APPRAISAL KIT FUN, FAST, AND ACCURATE DETERMINES THE KARAT OF GOLD, SILVER, AND PLATINUM JEWELRY IN SECONDS AUTHENTIC GTE 2''x 2'' JEWELRY TOUCHSTONE FOR SAFE TESTING THAT WON'T DAMAGE YOUR JEWELRY DIGITAL SCALE-DIAMOND TESTER-TRIPLET MAGNIFIER-NEEDLE FILES-GOLD/SILVER TEST BARS A MUST-HAVE FOR ANYONE WHO WANTS TO INVEST IN GOLD, SILVER, PLATINUM, OR DIAMONDS