1 Astrology
1.1 Origin
Southern and central Africa
Brazil, Southern and central Africa
1.2 Color
Blue, Green, Brown
Blue, Green, Black
1.3 Streak
1.4 For which Rashi?
Taurus
Gemini, Sagittarius
1.5 Planet
1.6 Element of Planets
1.7 Energy
Not Available
Not Available
1.8 How to Wear?
1.8.1 Finger
Not Available
Not Available
1.8.2 Ring Metal
Not Available
Not Available
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
2.2 Solubility
Not Available
Not Available
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
2.00-2.453.04-3.17
1
7.18
2.5 Fracture
Sub-Conchoidal, Conchoidal
Uneven
2.6 Cleavage
none
{001} Indistinct, {???} Indistinct
2.7 Mohs Hardness
2.8 Chemical Composition
Cu2H2Si2O5(OH)4
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
3 Optical Properties
3.1 Luster
Vitreous, Greasy
Not Available
3.2 Pleochroism
Not Available
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
3.3 Dispersion
3.4 Transparency
Opaque
Transparent, Translucent
3.5 Refractive Index
1.460-1.5701.604-1.646
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.023-0.0500.031-0.036
0
0.296
3.9 Clarity
Not Available
Transparent
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
Not Available
4.1.2 Cardiovascular
Not Available
Not Available
4.1.3 Respiratory
Not Available
Not Available
4.1.4 Reproductive
Not Available
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4.1.5 Digestive
Not Available
Not Available
4.2 Psychology
Not Available
Not Available
4.3 Healing
Not Available
Not Available
4.4 Qualities Associated
Not Available
Not Available