This EASY to use genuine JSP 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 5 piece listing includes: (BUNDLE SAVE$$) - (2) JSP Silver Testing Acid Solutions (0.5 oz) - (1) GTE Acid Neutralizing Solution (0.5 oz) Used to stop the acid from working and to clean the stone between each test as to not contaminate results! - (1) GTE 2''x2'' Test Stone (with rubber backing for nonslip desktop testing!) - (1) Easy to follow testing instruction booklet!