1 Astrology
1.1 Origin
Australia
Southern and central Africa
1.2 Color
Blue, Green, Greenish, Black
Yellow, Red, Brown
1.3 Streak
1.4 For which Rashi?
Not Available
Pisces, Cancer, Pisces, Cancer
1.5 Planet
Not Available
Moon, Neptune
1.6 Element of Planets
1.8 How to Wear?
1.8.1 Finger
Not Available
Not Available
1.9.1 Ring Metal
Not Available
Not Available
1.11 Energy
1.12 Deities
1.13 Not to wear with
Not Available
Not Available
1.14 Powers
1.15 Birthstone
1.15.1 Planetary
Not Available
Not Available
1.15.2 Talisman
Not Available
Not Available
2 Physical Properties
2.1 Tenacity
Not Available
Not Available
2.2 Solubility
Not Available
Not Available
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
4.00-4.622.65-2.87
1
7.18
3.4 Fracture
Conchoidal, Uneven
Not Available
3.5 Cleavage
Indistinct parting on [111]
Not Available
3.6 Mohs Hardness
3.7 Chemical Composition
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Not Available
4 Optical Properties
4.1 Luster
4.2 Pleochroism
Not Available
Not Available
4.3 Dispersion
4.9 Transparency
Gemmological Tables (2004) More from other references
Gemmological Tables (2004)
4.10 Refractive Index
1.790-1.8181.53-1.69
1
3.25
5.5 Optic Character
Not Available
Not Available
5.6 Crystal System
5.7 Birefringence
Not Available0.16
0
0.296
5.8 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Gemmological Tables (2004)
6 Benefits
6.1 Physical
6.1.1 Neurological
Not Available
Not Available
6.1.2 Cardiovascular
Not Available
Not Available
6.1.3 Respiratory
Not Available
Not Available
6.1.4 Reproductive
Not Available
Not Available
6.1.5 Digestive
Not Available
Not Available
6.2 Psychology
Not Available
Not Available
6.3 Healing
Not Available
Not Available
6.4 Qualities Associated
Not Available
Not Available