1 Astrology
1.1 Origin
1.2 Color
Blue
Red, Yellow, Brown, orange, gray, Green
1.3 Streak
1.4 For which Rashi?
Sagittarius, Scorpio
Not Available
1.5 Planet
1.6 Element of Planets
Not Available
Not Available
1.7 How to Wear?
1.7.1 Finger
Not Available
Not Available
1.7.2 Ring Metal
Not Available
Not Available
1.8 Energy
1.9 Deities
1.10 Not to wear with
Not Available
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1.11 Powers
1.12 Birthstone
1.12.1 Planetary
Not Available
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1.12.2 Talisman
Not Available
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2 Physical Properties
2.1 Tenacity
2.2 Solubility
Not Available
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2.3 Durability
Not Available
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2.4 Specific Gravity
3.65-4.556.50-7.00
1
7.18
2.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009)
Irregular, Brittle, Conchoidal
2.6 Cleavage
None, but may exhibit slight parting
On {011}, distinct; on {001}, {013}, indistinct
2.7 Mohs Hardness
2.8 Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
PbMoO 4Walter Schumann , Gemstones of the world (2001)
3 Optical Properties
3.1 Luster
Vitreous
Adamantine, Resinous
3.2 Pleochroism
AbsentWalter Schumann
Weak
3.3 Dispersion
3.4 Transparency
Gemmological Tables (2004)
Transparent
3.5 Refractive Index
1.735-1.7902.280-2.405
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
Not Available0.122
0
0.296
3.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
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4.1.2 Cardiovascular
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4.1.3 Respiratory
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4.1.4 Reproductive
Not Available
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4.1.5 Digestive
Not Available
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4.2 Psychology
Not Available
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4.3 Healing
Not Available
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4.4 Qualities Associated
Not Available
Not Available