Wholesale supply of 20 test stones for testing precious metals via acid tests. Acids sold separately. Lowest cost test method yet among the most effective. Use with PuriTEST acids.

• ✅ Professional quality stones for testing scrap jewelry, coins, bullion bars, antiques, art, and any other precious metals items
• ✅ Each stone measures 2" x 2" (inches)
• ✅ Exquisite new material is durable and will last many uses
• ✅ Test gold, silver, platinum, palladium, niobium, or any other precious metals you have acids for
• ✅ Will NOT damage the bullion/jewlery you wish to test