Origin
India, Southern and central Africa, Madagascar
USA, Switzerland, Tanzania, Madagascar, Russia, Sri Lanka
Color
Black, Brownish, Greenish
Colorless, Yellow, pink, Red
Streak
Brown
White
For which Rashi?
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-
Planet
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-
Element of Planets
-
-
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
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.18-3.222.90-2.98
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Conchoidal, ConchoidalWalter Schumann
Cleavage
{1011} Indistinct
Distinct on {11 2 0}, imperfect on {10 1 1}
Mohs Hardness
-99997.5-8
2
10
👆🏻
Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous
Pleochroism
Very strong: yellow-brown pale yellow
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Transparent, Translucent
-
Refractive Index
1.635-1.6721.650-1.695
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
Trigonal
Birefringence
0.0250.016
0
0.296
👆🏻
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Physical
Neurological
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Cardiovascular
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Supports heart health
Respiratory
Good
Excellent
Reproductive
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Digestive
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Psychology
Protection
Clarity
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection & Grounding
Spiritual Activation