This EASY to use genuine JSP & GTE kit will determine the karat value and purity of Gold 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! This 4 Piece kit includes: - JSP 10K Gold Testing Acid Solution 0.5 oz. - JSP 14K Gold Testing Acid Solution 0.5 oz.- JSP 18K Gold Testing Acid Solution 0.5 oz. - JSP 22K Gold Testing Acid Solution 0.5 oz.- GTE 2''x2'' Testing Stone with rubber backing for non-slip desktop testing!- GTE Acid Neutralizer- used to clean stones in between each use - Easy to read and follow instruction booklet with color chart!