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PuriTEST and 3"x6" Test Stone with rubber backing to ensure non-slip desktop testing! Simply scratch the test stone with your jewelry and apply a drop of the acid to the stone and watch the results appear!
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.