Origin
Switzerland
Southern and central Africa
Color
Brown, Brownish, Yellow, Black, Reddish
Red, Brown, Black
Streak
White, gray
Brownish, Red
For which Rashi?
-
-
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
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.7-3.85.85-6.15
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Conchoidal
Cleavage
Distinct on {010}
Fair in four directions forming octahedrons
Mohs Hardness
7-7.53.5-4
2
10
👆🏻
Chemical Composition
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Resinous
Adamantine
Pleochroism
X = colorless; Y = pale yellow; Z = golden yellow
visible
Dispersion
0.020.05
0.005
1
👆🏻
Transparency
-
TranslucentWalter Schumann
Refractive Index
1.736-1.7622.849
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
cubic
Birefringence
0.009-0.015-9999
0
0.296
👆🏻
Clarity
-
TranslucentWalter Schumann
Physical
Neurological
Enhances mental clarity and focus
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Cardiovascular
-
Supports heart health
Respiratory
Good
Poor
Reproductive
-
-
Digestive
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-
Psychology
Protection
Vitality
Healing
Physical healing
Emotional healing
Qualities Associated
Protection
Vitality