Origin
Southern and central Africa
Kenya, Southern and central Africa
Color
Brown, White, Greenish, gray, Green, Brownish
Green, Brown, Yellow, Red
Streak
gray
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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
2.9-3.53.55-3.70
1
7.18
👆🏻
Fracture
Conchoidal
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Cleavage
{110} Perfect, {???} Distinct, {???} Distinct
Perfect
Mohs Hardness
5.5-64-7
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Al 2SiO 5Arthur Thomas , Gemstones (2009) More from other references
Luster
Vitreous, Pearly
Vitreous
Pleochroism
-
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
Transparent
Transparent
Refractive Index
1.603-1.6901.710-1.735
1
3.25
👆🏻
Optic Character
Biaxial/+
Biaxial/+
Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
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Birefringence
-99990.012-0.033
0
0.296
👆🏻
Clarity
Transparent
Transparent
Physical
Neurological
Enhances brain function
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Cardiovascular
Supports heart health
Supports heart health
Respiratory
Good
Good
Reproductive
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Digestive
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Psychology
Peace
Intuition
Healing
Emotional healing
Emotional healing
Qualities Associated
Self-discovery
Tranquility