1 Astrology
1.1 Origin
Southern and central Africa, Sixth Edition (2006)
Not Available, Southern and central Africa
1.2 Color
Blue, Green, Blue, Brown
White, Colorless, Yellow, Green, Blue, Reddish, Brown, Red, Brown
1.3 Streak
1.4 For which Rashi?
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
Receptive
Receptive, Projective
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
2.5 Fracture
Sub-Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven
2.6 Cleavage
none
{010} Perfect, {210} Perfect, {010} Imperfect
2.7 Mohs Hardness
2.8 Chemical Composition
3 Optical Properties
3.1 Luster
Vitreous, Greasy
Vitreous
3.2 Pleochroism
AbsentWalter Schumann
colorless.
3.3 Dispersion
3.4 Transparency
3.5 Refractive Index
1.460-1.570Not Available
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.023-0.050Not Available
0
0.296
3.9 Clarity
Gemmological Tables (2004) More from other references
Not Available
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