PRODUCT DETAILS These EASY to use genuine PuriTEST *LARGE* 2''x4'' test stones are great tool to use with will Gold, Silver, and Platinum testing solutions. Simply scratch the test stone with your jewelry and apply a drop of the acid to the stone and watch the results appear! Solutions sold separately. This listing includes: - (2) PuriTEST 2''x4'' Test Stones New in Box with Rubber backing to ensure non-slip desktop testing! Can be used over a thousand times, simply clean with baking soda/water between uses. - (1) 1/2 oz bottle of JSP Silver Testing Solution - (1) Easy to follow instruction booklet with color chart A MUST-HAVE for anyone who invests in gold, silver, or platinum! NOTE: *Solutions sold separately* If you have any further questions, please feel free to contact us. We look forward to serving you in the future.