1 Astrology
1.1 Origin
Mexico
Southern and central Africa
1.2 Color
Colorless, Blue, Violet, White, Brown, Colorless, Blue, Violet, White, rose, Brown, gray, Colorless, White, Violet, gray, Colorless, White, Violet, gray
Greenish, Blue, Colorless, Green, Yellow
1.3 Streak
1.4 For which Rashi?
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1.5 Planet
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1.6 Element of Planets
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1.7 How to Wear?
1.7.1 Finger
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1.7.2 Ring Metal
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1.8 Energy
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1.9 Deities
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1.10 Not to wear with
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1.11 Powers
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1.12 Birthstone
1.12.1 Planetary
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1.12.2 Talisman
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2 Physical Properties
2.1 Tenacity
2.2 Solubility
2.3 Durability
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2.4 Specific Gravity
2.90-2.983.17-3.24
1
7.18
2.8 Fracture
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
2.9 Cleavage
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
(0001) indistinct
2.10 Mohs Hardness
3.4 Chemical Composition
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
SiCArthur Thomas , Gemstones (2009)
4 Optical Properties
4.1 Luster
Pearly, Greasy
Adamantine
4.2 Pleochroism
For violet varieties
NilArthur Thomas
4.3 Dispersion
4.6 Transparency
Transparent
Gemmological Tables (2004) More from other references
4.7 Refractive Index
1.570-1.6142.648-2.691
1
3.25
4.11 Optic Character
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4.12 Crystal System
4.13 Birefringence
5.5 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
6 Benefits
6.1 Physical
6.1.1 Neurological
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6.1.2 Cardiovascular
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6.1.3 Respiratory
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6.1.4 Reproductive
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6.1.5 Digestive
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6.2 Psychology
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6.3 Healing
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6.4 Qualities Associated
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