1 Astrology
1.1 Origin
Brazil, Southern and central Africa
Italy
1.2 Color
Blue, Green, Black
Green, Green, gray, Brown, Black
1.3 Streak
White
Greenish, White, Greenish, White
1.4 For which Rashi?
Gemini, Sagittarius, Gemini, Sagittarius, Gemini, Sagittarius
Not Available
1.5 Planet
1.6 Element of Planets
Not Available
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1.7 How to Wear?
1.7.1 Finger
Not Available
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1.7.2 Ring Metal
Not Available
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1.8 Energy
1.9 Deities
1.10 Not to wear with
Not Available
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1.11 Powers
Not Available
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1.12 Birthstone
1.12.1 Planetary
Not Available
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1.12.2 Talisman
Not Available
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2 Physical Properties
2.1 Tenacity
Not Available
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2.2 Solubility
Not Available
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2.3 Durability
Not Available
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2.4 Specific Gravity
3.04-3.172.58-2.80
1
7.18
2.5 Fracture
Uneven, Uneven, Gemstones of the world (2001) More from other references
Conchoidal, Brittle, Metallic, Conchoidal, Handbook of mineralogy (2001)
2.6 Cleavage
{001} Indistinct, {???} Indistinct
{001} Good
2.7 Mohs Hardness
2.8 Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
3 Optical Properties
3.1 Luster
Not Available
Waxy, Silky, Resinous, Greasy
3.2 Pleochroism
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
pale greenish yellow.
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Translucent
3.5 Refractive Index
1.604-1.6461.530-1.575
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
monoclinic
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
3.8 Birefringence
0.031-0.036Not Available
0
0.296
3.9 Clarity
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
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4.1.2 Cardiovascular
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4.1.3 Respiratory
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4.1.4 Reproductive
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4.1.5 Digestive
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4.2 Psychology
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4.3 Healing
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4.4 Qualities Associated
Not Available
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