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discovered Quartz

... s an extremely hard rock formed by volcanic activity. Its shimmering beauty lies in the crystals of quartz, mica, and feldspar trapped within. So-called consistent graniteassame pattern throughout. Variegated granite has veins that vary from piece to piece, which add character but also it difficult to match sections. Granite is very porous and should be treated with a penainsealer every six months to prevent stains. Soapstone and slate are much softer than granite but also less p ...