This EASY to use genuine JSP GTE kit will determine the karat value and purity of Gold and Silver Jewelry, scrap, bars, coins, and much more! *Our goal is to make testing your jewelry FUN, FAST, and EASY! *We promise that our acids are guaranteed to be FRESH! *Each bottle will test hundreds of times! *These small bottles are perfect for traveling with or carrying in a purse or briefcase. Quick easy to use; instructions included. *A MUST-HAVE for anyone who invests in gold and silver! This 6 Piece kit includes: - JSP 14K Gold Testing Acid Solution 0.5 oz. - JSP 18K Gold Testing Acid Solution 0.5 oz. - JSP Silver Testing Acid Solution 0.5 oz. - JSP 22K Testing Acid Solution 0.5 oz. - GTE 2''x2'' White Scratch Test Stone (with rubber backing for non-slip desktop testing!) Used to protect your jewelry. White color makes viewing silver test results easier. - Easy to read and follow instruction booklet!