1 Astrology
1.1 Origin
Sri Lanka, Burma, USA, Russia
Pakistan
1.2 Color
Yellow, Brown, pink, Colorless
White, Green, Blue, Yellow, Brownish, Red, Blue, gray, Yellow, White
1.3 Streak
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
Not Available
Not Available
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
2.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Irregular
2.6 Cleavage
Not Available
Perfect on {0001}
2.7 Mohs Hardness
2.8 Chemical Composition
MgAlBO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
Not Available
Vitreous, Pearly
3.2 Pleochroism
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli
Not Available
3.3 Dispersion
3.4 Transparency
Gemmological Tables (2004) More from other references
TransparentMichael OâDonoghue, Gems, Sixth Edition (2006)
3.5 Refractive Index
1.665-1.7121.56-1.60
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.036-0.0420.010-0.020
0
0.296
3.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentMichael OâDonoghue
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