Pro-quality Gold Test Stone- 6x3 inch large test stone with professional rubber backing by PuriTEST

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Large 6x3 inch PuriTESTTM Pro-Quality Testing Stone. This large glass test stone includes a rubber grip backing. This test stone measures 6" x 3" x 1/4" *YOU CAN TEST SEVERAL PIECES AT ONCE WITH THIS EXTRA LARGE TEST STONE!* (Test Stones are used to test your gold jewelry without actually testing on the piece itself and ruining it. Instead you apply the acid to a mark that you rub on the test stone.) This stone allows to to test quicker by allowing you to test many items all at the same time! BEWARE of other Amazon sellers stating they sell this. Only PuriTESTTMhas these stones.

Smooth Black Glass Surface for easy reading of the test acids on this stone.
Non slip pad on back to keep stone from sliding or scratching on table surfaces
Large 6x3 tesing surface make it easy to test several items at once.
This stone is used in conjunction with Gold test acids to determine if solid gold and karats
Test stones are used to test your gold jewelry without ruining it, by using the stone to test instead of directly on the piece.

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