QUARTZ

Quartz stones have been known, worked, carved, cut, used and worn in various settings since very ancient times and in almost every country. The Greeks (and the Romans) believed that quartz was ice that never melted because it was formed by the gods. Scientifically also , Quartz is formed when the ice gets crystallized under immense pressure. The Sumerians cut and engraved various quartz stones as cylinder seals and used them later as ring seals. As the Sumerians invented writing, quartz was probably one of the first gemstones to be written on and also used as a stamp to make a written impression in clay. Thousands of years ago, the Egyptians made beads, scarab figures, and other jewelry from many of the quartz stones.
Quartz is quite a durable stone, hardness rating an 7 on the hardness scale. synthetic quartz is used in watches to keep time. Quartz is formed in many different ways and occurs in many igneous and metamorphic rocks, particularly in granite and gneiss. Because it resists weathering, it is also found in alluvial sands and gravels. Quartz is extremely widespread. The most famous localities for magnificent large crystals are in the French Alps, US, Brazil and Madagascar.

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