Origin
India, Southern and central Africa, Madagascar
Russia
Color
Black, Brownish, Greenish
Colorless, Greenish, Yellow, White, pink
Streak
Brown
White
For which Rashi?
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-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
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-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.18-3.222.54-2.61
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Uneven
Cleavage
{1011} Indistinct
Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90°.
Mohs Hardness
-99996
2
10
👆🏻
Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous, Pearly
Pleochroism
Very strong: yellow-brown pale yellow
colorless.
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
Transparent, Translucent
-
Refractive Index
1.635-1.6721.518-1.536
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
monoclinic
Birefringence
0.0250.0050-0.0060
0
0.296
👆🏻
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
Good
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Reproductive
-
-
Digestive
-
-
Psychology
Protection
Emotional Balance
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection & Grounding
Harmony