Origin
Southern and central Africa
USA, Switzerland, Tanzania, Madagascar, Russia, Sri Lanka
Color
Brown, Green, gray, White
Colorless, Yellow, pink, Red
Streak
gray, White
White
For which Rashi?
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Planet
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Element of Planets
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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
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Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.15-3.2592.90-2.98
1
7.18
👆🏻
Fracture
-
Conchoidal, ConchoidalWalter Schumann
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Distinct on {11 2 0}, imperfect on {10 1 1}
Mohs Hardness
5.5-67.5-8
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous
Pleochroism
Weak to moderate
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Transparent
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Refractive Index
1.625-1.7181.650-1.695
1
3.25
👆🏻
Optic Character
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Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Trigonal
Birefringence
-99990.016
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
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Excellent
Reproductive
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Digestive
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Psychology
Focus
Clarity
Healing
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Emotional healing
Qualities Associated
Protection
Spiritual Activation