1 Astrology
1.2 Origin
Not Available
Afghanistan, Southern and central Africa
1.5 Color
White
Blue, Greenish, Violet
1.8 Streak
Not Available
Blue, White
1.11 For which Rashi?
1.14 Planet
1.4 Element of Planets
Not Available
Not Available
1.8 Energy
1.12 How to Wear?
1.12.2 Finger
Not Available
Not Available
1.13.2 Ring Metal
Not Available
Not Available
1.17 Deities
1.21 Not to wear with
Not Available
Not Available
1.24 Powers
1.28 Birthstone
1.29.2 Planetary
Not Available
Not Available
1.29.7 Talisman
4 Physical Properties
4.1 Tenacity
5.3 Solubility
5.5 Durability
Not Available
Not Available
5.7 Specific Gravity
5.14 Fracture
Not Available
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
5.16 Cleavage
Indiscernible
Imperfect on {110}
5.17 Mohs Hardness
6.4 Chemical Composition
SiO2
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
8 Optical Properties
8.3 Luster
8.4 Pleochroism
Not Available
Not Available
8.6 Dispersion
9.8 Transparency
Translucent, Opaque, Translucent to opaque
Gemmological Tables (2004) More from other references
9.9 Refractive Index
9.18 Optic Character
Not Available
Not Available
9.19 Crystal System
9.20 Birefringence
Not AvailableNot Available
0
0.296
10.3 Clarity
OpaqueHerve Nicolas Lazzarelli
Gemmological Tables (2004) More from other references
12 Benefits
12.1 Physical
12.1.1 Neurological
Not Available
Not Available
12.1.4 Cardiovascular
Not Available
Not Available
12.3.1 Respiratory
Not Available
Not Available
12.4.1 Reproductive
Not Available
Not Available
12.5.1 Digestive
Not Available
Not Available
12.7 Psychology
Not Available
Not Available
12.9 Healing
Not Available
Not Available
12.10 Qualities Associated
Not Available
Not Available