Semi-Precious Facetted Stones
Semi-Precious Cabochon/Beads
Cubic Zirconia
Imitation and Synthetic Stones
Half-Cut Pearls
Silver Jewellery
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 Semi - Precious Stone

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Mohs Hardness: 7 
Specific Gravity:
Reflective Index:

Clear quartz crystals are made of silicon and oxygen, 
combined to form silicon dioxide. It is the most common 
single mineral in the earth's crust. It is found virtually
everywhere. It is found in "perfect" single crystals from 
microscopic size to many tons. Common sand is composed 
primarily of quartz.

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