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Quartz Gemstone (Hardness of 7.0)
The word "Quartz" is derived from the German word "quartz", Quartz is the second most abundant mineral after feldspar. The pure quartz is colorless and transparent in crystal form. There are a number of varieties of quartz such as Citrine, Amethyst, Rose Quartz, Smoky Quartz, White Quartz, Green Quartz, Blue Quartz and milky quartz. Quartz is mainly found in sedimentary rocks such as sandstone and shale. A major mining location for high purity quartz is the Spruce Pine Gem Mine in Spruce Pine, North Carolina, United States of America.
It is very beautiful stone. Due to its cheapest prices and good hardness, it is widely used worldwide in all kind of jewelries. They are available in mm sizes and far sizes in shape of Round, Oval, Pear, Heart, Marquies, Trillion, Buggette, Square, Octogun, Cushion, Briolette, Beads, Checker Boards, Buff Tops, Cabs and in many Fancy Shapes.
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