Amethyst (Quartz variety)

(Oxide - SiO2)

Amethyst - Photo by E. Gene Chambers

Properties

Origin:

From the Greek amethystos - unintoxicating

Hardness (Mohs Scale):

7 (brittle)

Crystal System (number of classes)

Hexagonal

Color:

A light to dark violet color
Transparency: Transparent to translucent
Luster: Vitreous, greasy

Streak:

White

Occurrence:

Widely found; single crystals of considerable size and weight are often found (eg in Brazil - approx. 40 tons, and in Kazakhstan, USSR - approx. 70 tons.

 

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