1 Astrology
1.1 Origin
Brazil, USA, Switzerland, Kenya, Mozambique, Russia, Nepal, India, Burma
Sri Lanka, Burma, USA, Russia
1.1 Color
Blue, Yellow, Colorless, White, gray, Green, Black
Yellow, Brown, pink, Colorless
1.4 Streak
1.7 For which Rashi?
Aries, Libra, Taurus, Aries, Libra, Taurus, Aries, Libra, Taurus
Not Available
1.4 Planet
1.6 Element of Planets
1.9 Energy
1.13 How to Wear?
1.14.1 Finger
Not Available
Not Available
1.17.1 Ring Metal
Not Available
Not Available
1.21 Deities
Endurance, Meditation, Love
Not Available
1.23 Not to wear with
Not Available
Not Available
1.26 Powers
1.29 Birthstone
1.29.1 Planetary
Not Available
Not Available
2.3.1 Talisman
Not Available
Not Available
3 Physical Properties
3.1 Tenacity
4.2 Solubility
Not Available
Not Available
4.5 Durability
Not Available
Not Available
5.3 Specific Gravity
3.53-3.653.46-3.50
1
7.18
5.8 Fracture
Splintery, Brittle, Metallic
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
5.10 Cleavage
[100] perfect [010] imperfect with 79° angle between
Not Available
5.12 Mohs Hardness
5.20 Chemical Composition
Not Available
MgAlBO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
6 Optical Properties
6.1 Luster
Vitreous, Pearly
Not Available
6.3 Pleochroism
Trichroic
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli
8.2 Dispersion
9.13 Transparency
Not Available
Gemmological Tables (2004) More from other references
9.14 Refractive Index
1.71-1.741.665-1.712
1
3.25
9.20 Optic Character
Not Available
Not Available
9.24 Crystal System
9.26 Birefringence
Not Available0.036-0.042
0
0.296
10.2 Clarity
Color grading system
TransparentUlrich Henn and Claudio C. Milisenda
12 Benefits
12.1 Physical
13.0.0 Neurological
Not Available
Not Available
13.1.4 Cardiovascular
Not Available
Not Available
13.1.8 Respiratory
Not Available
Not Available
13.2.1 Reproductive
Not Available
Not Available
13.4.1 Digestive
Not Available
Not Available
13.7 Psychology
Not Available
Not Available
13.10 Healing
Not Available
Not Available
13.12 Qualities Associated
Not Available
Not Available