1 Astrology
1.1 Origin
Brazil, Southern and central Africa
Zimbabwe
1.2 Color
Blue, Green, Black
Violet, White, gray, Blue, Brown, Black
1.3 Streak
1.4 For which Rashi?
Gemini, Sagittarius, Gemini, Sagittarius, Gemini, Sagittarius
Cancer, Sagittarius, Cancer, Sagittarius, Cancer, Sagittarius
1.5 Planet
1.6 Element of Planets
1.7 How to Wear?
1.7.1 Finger
Not Available
Not Available
1.7.2 Ring Metal
Not Available
Not Available
1.8 Energy
1.9 Deities
1.10 Not to wear with
Not Available
Not Available
1.11 Powers
1.12 Birthstone
1.12.1 Planetary
Not Available
Not Available
1.12.2 Talisman
Not Available
Not Available
2 Physical Properties
2.1 Tenacity
Not Available
Not Available
2.2 Solubility
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
3.04-3.172.55-2.70
1
7.18
2.5 Fracture
Uneven, Uneven, Gemstones of the world (2001) More from other references
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
2.6 Cleavage
{001} Indistinct, {???} Indistinct
Absent
2.7 Mohs Hardness
2.8 Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
SiO2
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
AbsentWalter Schumann
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Translucent, Translucent to opaque
3.5 Refractive Index
1.604-1.6461.530-1.543
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.031-0.0360.003-0.009
0
0.296
3.9 Clarity
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
Not Available
4.1.2 Cardiovascular
Not Available
Not Available
4.1.3 Respiratory
Not Available
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4.1.4 Reproductive
Not Available
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4.1.5 Digestive
Not Available
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4.2 Psychology
Not Available
Not Available
4.3 Healing
Not Available
Not Available
4.4 Qualities Associated
Not Available
Not Available