1 Astrology
1.1 Origin
Southern and central Africa
Afghanistan, Australia, India, blue, green, blue, green
1.2 Color
Black, Reddish, gray
Green, Blue, gray
1.3 Streak
1.4 For which Rashi?
Not Available
Sagittarius, Pisces, Aquarius, Sagittarius, Pisces, Aquarius, Sagittarius, Pisces, Aquarius
1.5 Planet
Not Available
Venus, Neptune
1.6 Element of Planets
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
1.9 Deities
1.10 Not to wear with
Not Available
Not Available
1.11 Powers
Not Available
Protection, Courage, Love
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
5.51-5.642.30-2.90
1
7.18
2.5 Fracture
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
2.6 Cleavage
Distinct on {10 1 1}
Good to perfect_usually N/A
2.7 Mohs Hardness
2.8 Chemical Composition
Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CuAl6(PO4)4(OH)8 • 4H2O
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Moderate; cochineal-red to blood-red
Weak
3.3 Dispersion
3.4 Transparency
OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Rarely transparentMore from other references
Translucent, Opaque
3.5 Refractive Index
2.792-3.0871.610-1.650
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
3.9 Clarity
OpaqueUlrich Henn and Claudio C. Milisenda
Translucent
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