PRODUCT DETAILSThis EASY to use genuine JSP & PuriTEST Gold and Silver appraisal test kit is great kit to use to determine the value and authenticity of your jewelry, scrap, and much more!  Simply scratch the test stone with your jewelry and apply a drop of the acid to the stone and watch the results appear!This 4 piece listing includes: (BUNDLE & SAVE$$)- (1) JSP 18K Gold Testing Acid Solution (0.5 oz)- (1) JSP Silver Testing Acid Solution (0.5 oz)- (1)  PuriTEST 2''x2'' Scratch Test Stone (with rubber backing for non-slip desktop testing!)- (1) Easy to follow instructions A MUST-HAVE for anyone who invests in gold or silver!If you have any further questions, please feel free to contact us. We look forward to serving you in the future.