Origin
Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia
Southern and central Africa
Color
Green, Brown, Colorless, Greenish, Yellow
White, Colorless, Blue, Red, Green, Yellow, Violet, Black
Streak
White
Colorless
For which Rashi?
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-
Planet
-
-
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
-
-
Birthstone
Planetary
-
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Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.25-3.453.03-3.18
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven, Irregular, Conchoidal
Cleavage
Good on {110}
{???} Indistinct
Mohs Hardness
6.57-7.5
2
10
👆🏻
Chemical Composition
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Luster
Vitreous
Vitreous
Pleochroism
X = colorless to green; Y = colorless
Very strong: pale yellow colorless
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
-
Transparent
Refractive Index
1.660-1.6851.614-1.666
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
0.012-0.0170.014-0.032
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Physical
Neurological
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Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
Harmony
Self-acceptance
Healing
Emotional healing
Emotional healing
Qualities Associated
Self-worth
Self-Exploration