Origin
Southern and central Africa
Canada, Brazil, Kenya, Tanzania, Madagascar, Burma, Afghanistan
Color
Brown, Green, gray, White
Violet, White, gray, Brown, pink, Yellow
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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Solubility
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Durability
-
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Specific Gravity
3.15-3.2592.58-2.74
1
7.18
👆🏻
Fracture
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ConchoidalWalter Schumann, Splintery
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
{100} Distinct, {110} Distinct
Mohs Hardness
5.5-65.5-6
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references
Luster
Vitreous
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Pleochroism
Weak to moderate
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Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Transparent
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Refractive Index
1.625-1.7181.540-1.579
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
tetragonal
Birefringence
-99990.006-0.037
0
0.296
👆🏻
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Physical
Neurological
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Enhances mental clarity and focus
Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
Focus
Creativity
Healing
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Emotional healing
Qualities Associated
Protection
Problem Solving & Creativity