1 Astrology
2.2 Origin
Southern and central Africa
Southern and central Africa
2.4 Color
White
Black, Brownish, Brown, Black, Brownish
2.5 Streak
2.7 For which Rashi?
2.10 Planet
2.11 Element of Planets
2.13 How to Wear?
2.14.1 Finger
Not Available
Not Available
2.14.3 Ring Metal
Not Available
Not Available
2.15 Energy
2.18 Deities
Neptune, Tiamat
Not Available
2.20 Not to wear with
Not Available
Not Available
2.22 Powers
Not Available
Not Available
2.24 Birthstone
2.24.2 Planetary
Not Available
Not Available
2.24.3 Talisman
Not Available
Not Available
3 Physical Properties
4.1 Tenacity
4.3 Solubility
Not Available
Not Available
4.5 Durability
Not Available
Not Available
4.7 Specific Gravity
4.11 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven
4.13 Cleavage
3,1 basal
None, parting may develop along {111}
4.14 Mohs Hardness
5.4 Chemical Composition
6 Optical Properties
6.1 Luster
6.2 Pleochroism
6.3 Dispersion
6.6 Transparency
Transparent
Not Available
6.7 Refractive Index
1.562-1.6152.08-2.16
1
3.25
6.11 Optic Character
Not Available
Not Available
6.12 Crystal System
6.13 Birefringence
0.003-0.010Not Available
0
0.296
7.3 Clarity
Transparent
Not Available
8 Benefits
8.1 Physical
8.1.1 Neurological
Not Available
Not Available
8.1.2 Cardiovascular
Not Available
Not Available
8.1.3 Respiratory
Not Available
Not Available
8.1.4 Reproductive
Not Available
Not Available
8.1.5 Digestive
Not Available
Not Available
8.2 Psychology
Not Available
Not Available
8.3 Healing
Not Available
Not Available
8.4 Qualities Associated
Not Available
Not Available