1 Astrology
1.1 Origin
Southern and central Africa
Southern and central Africa, Sri Lanka, blue, India, brown, green, Orange, Sri Lanka, blue, India, brown, green, Orange
1.2 Color
Violet, Blue, Red, Yellow, Brown, gray
White, Green, Brownish
1.3 Streak
1.4 For which Rashi?
Not Available
Cancer, Libra, Scorpio, Cancer, Libra, Scorpio, Cancer, Libra, Scorpio
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
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
3.90-4.052.56-2.60
1
7.18
2.5 Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
2.6 Cleavage
None – parting in 3 directions
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
2.7 Mohs Hardness
2.8 Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
3 Optical Properties
3.1 Luster
Adamantine, Vitreous
Pearly
3.2 Pleochroism
None
AbsentWalter Schumann
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Transparent, Transparent to translucent
3.5 Refractive Index
1.758-1.7801.518-1.527
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.007-0.0100.006-0.007
0
0.296
3.9 Clarity
Gemmological Tables (2004) More from other references
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
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