Origin
Southern and central Africa
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Color
Blue, Grey
Yellow, Violet, Green, Brown, White, gray, Greenish
Streak
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White
For which Rashi?
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Planet
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Element of Planets
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Energy
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How to Wear?
Finger
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Ring Metal
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Deities
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Not to wear with
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Powers
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Birthstone
Planetary
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Talisman
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Tenacity
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Elastic
Solubility
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Durability
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Specific Gravity
2.58-2.642.9-3.1
1
7.18
👆🏻
Fracture
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Uneven
Cleavage
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Perfect basal {001}
Mohs Hardness
73.5-4.0
2
10
👆🏻
Chemical Composition
SiO 2Walter Schumann , Gemstones of the world (2001)
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Luster
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Pearly, Vitreous
Pleochroism
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Distinct
Dispersion
0.050.02
0.005
1
👆🏻
Transparency
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Refractive Index
1.534-1.5401.565-1.625
1
3.25
👆🏻
Optic Character
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Crystal System
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monoclinic
Birefringence
-99990.040-0.050
0
0.296
👆🏻
Clarity
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Physical
Neurological
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Cardiovascular
Aids in digestion and soothes the stomach
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Respiratory
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Reproductive
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Digestive
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Psychology
Protection
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Healing
Emotional healing
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Qualities Associated
Protection
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