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Variety

Amethyst

Mineral

Quartz

Color

Purple (Quartz can be just about any color, but to be called Amethyst it must be purple)

Hardness

7

Streak

Colorless to White

Group

Oxides

Chemical Formula

SiO2

Crystal System

Trigonal / Hexagonal

Fun Facts 1

Amethyst is the birthstone for February

Fun Facts 2

Amethyst was thought to prevent people from becoming drunk

Where it's found  
Common uses  

Back to "Rough Gemstones & Minerals" ID page

          
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