1 Astrology
1.1 Origin
Southern and central Africa
1.2 Color
Greenish, Blue, Colorless, Green, Yellow
1.3 Streak
Greenish, gray
1.4 For which Rashi?
Not Available
1.5 Planet
Not Available
1.6 Element of Planets
Not Available
1.7 How to Wear?
1.7.1 Finger
Not Available
1.7.2 Ring Metal
Not Available
1.8 Energy
Not Available
1.9 Deities
Not Available
1.10 Not to wear with
Not Available
1.11 Powers
Not Available
1.12 Birthstone
1.12.1 Planetary
Not Available
1.12.2 Talisman
Not Available
2 Physical Properties
2.1 Tenacity
Not Available
2.2 Solubility
none
2.3 Durability
Not Available
2.4 Specific Gravity
3.17-3.24
Check 3.17-3.24 Range Gemstones!
1
7.18
2.5 Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
2.6 Cleavage
(0001) indistinct
2.7 Mohs Hardness
9-9.5
Check 9-9.5 Range Gemstones!
2
10
2.8 Chemical Composition
SiCArthur Thomas , Gemstones (2009)
3 Optical Properties
3.1 Luster
Adamantine
3.2 Pleochroism
NilArthur Thomas
3.3 Dispersion
3.4 Transparency
Gemmological Tables (2004) More from other references
3.5 Refractive Index
2.648-2.691
Check 2.648-2.691 Range Gemstones!
1
3.25
3.6 Optic Character
Not Available
3.7 Crystal System
6H polytype
3.8 Birefringence
0.043
Check 0.043 Range Gemstones!
0
0.296
3.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
4.1.2 Cardiovascular
Not Available
4.1.3 Respiratory
Not Available
4.1.4 Reproductive
Not Available
4.1.5 Digestive
Not Available
4.2 Psychology
Not Available
4.3 Healing
Not Available
4.4 Qualities Associated
Not Available