Amethyst

Crystalline quartz amethyst comes in various colors from pale purple to deep purple and sometimes reddish.

• Color: purple, violet, dark purple, purple-white
  

• Streak: White

• Luster: vitreous (glass-like)

• Cleavage: None

• Refractive index: 1.54-1.55

• Mohs Hardness Scale: 7

• Specific Gravity: 2.6-2.7

• Crystal Structure: hexagonal

• Transparency: Transparent

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