6x4mm Rutilated Quartz
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Description
Quartz is an abundant mineral in the Earth's continental crust. It is made up of a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2. There are many different varieties of quartz, several of which are semi-precious gemstones. Throughout the world, varieties of quartz have been, since antiquity, the most commonly used minerals in the making of jewelry and hardstone carvings.
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6x4mm Rutilated Quartz
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