1 Astrology
1.1 Origin
1.2 Color
Colorless, White, Yellow, White, Greenish, gray, Brown, Colorless, Yellow
Black, Green, Black, Green, Black, Green, gray, Black, Green, gray
1.3 Streak
White
Not Available, Not Available, gray, Green
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
Not Available
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
Not Available
Not Available
1.9 Deities
Not Available
Not Available
1.10 Not to wear with
Not Available
Not Available
1.11 Powers
Not Available
Not Available
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
2.5 Fracture
Conchoidal, Brittle, Conchoidal
Uneven, Brittle, Metallic, Brittle, Metallic
2.6 Cleavage
{010} perfect, {110} distinct, {100} in traces
Perfect on [110]
2.7 Mohs Hardness
2.8 Chemical Composition
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
NaNa2(Fe++4Fe+++)Si8O22(OH)2
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Strong
Strong: Blue-greens
3.3 Dispersion
3.4 Transparency
Transparent
Not Available
3.5 Refractive Index
1.702-1.7501.652-1.699
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.048Not Available
0
0.296
3.9 Clarity
Transparent
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