1 Astrology
1.1 Origin
Southern and central Africa
USA, Southern and central Africa, green, blue, China, India, USA, Italy, green, blue, China, India, USA, Italy
1.2 Color
Violet, Blue, Red, Yellow, Brown, gray
White, Yellow
1.3 Streak
White, None
Not Available
1.4 For which Rashi?
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
Not Available
Not Available
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
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
3.90-4.052.44-2.62
1
7.18
2.5 Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
Uneven, Uneven, Gemstones of the world (2001) More from other references
2.6 Cleavage
None – parting in 3 directions
Not Available
2.7 Mohs Hardness
2.8 Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
H 4Mg 3Si 2O 9Walter Schumann , Gemstones of the world (2001) More from other references
3 Optical Properties
3.1 Luster
Adamantine, Vitreous
Vitreous, Greasy, Silky
3.2 Pleochroism
None
AbsentWalter Schumann
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Translucent
3.5 Refractive Index
1.758-1.7801.560-1.571
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.007-0.0100.008-0.014
0
0.296
3.9 Clarity
Gemmological Tables (2004) More from other references
Translucent
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
Not Available
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