Reviewed by more than 6 consumers, more than 100% of the reviews about this PuriTEST hardness testing equipment had positive sentiment, meaning that these customers would probably advise purchasing this product when asked about a recommended hardness testing equipment.
$8.99 (as of 12/10/2019 05:15 PDT details )Features:
- 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.