This protection rates at a 7 on the Mohs scale, which is the hardness of quartz. The science behind this is difficult to explain, but the performance of the product speaks for itself. At Pearl, we continue to bring you the best of the best products. Products that you can use yourself or sell to others as a service or commodity. For Interested Distributors and Dealers please Email Dave: [email protected] or Call: 808 779-7163.