1 Astrology
1.1 Origin
Not Available
Brazil, Southern and central Africa
1.2 Color
Yellow, Violet, Green, Brown, White, gray, Greenish
Blue, Green, Black
1.3 Streak
1.4 For which Rashi?
Not Available
Gemini, Sagittarius, Gemini, Sagittarius, Gemini, Sagittarius
1.5 Planet
1.6 Element of Planets
Not Available
Not Available
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
Not Available
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1.12 Birthstone
1.12.1 Planetary
Not Available
Not Available
1.12.2 Talisman
Not Available
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2 Physical Properties
2.1 Tenacity
2.2 Solubility
Not Available
Not Available
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
2.5 Fracture
Uneven
Uneven, Uneven, Gemstones of the world (2001) More from other references
2.6 Cleavage
Perfect basal {001}
{001} Indistinct, {???} Indistinct
2.7 Mohs Hardness
2.8 Chemical Composition
Not Available
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
3 Optical Properties
3.1 Luster
Pearly, Vitreous
Not Available
3.2 Pleochroism
Distinct
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
3.3 Dispersion
3.4 Transparency
Not Available
Transparent, Translucent
3.5 Refractive Index
1.565-1.6251.604-1.646
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.040-0.0500.031-0.036
0
0.296
3.9 Clarity
Not Available
Transparent
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
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4.1.2 Cardiovascular
Not Available
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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
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4.3 Healing
Not Available
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4.4 Qualities Associated
Not Available
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