1 Astrology
1.1 Origin
the type locality
Russia, green, violet, Yellow, blue, green, violet, Yellow, blue
1.2 Color
Colorless, gray, White
Black, Violet, Blue, Green
1.3 Streak
1.4 For which Rashi?
Not Available
Gemini, Virgo, Gemini, Virgo, Gemini, Virgo
1.5 Planet
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
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
2.33-2.373.22-3.40
1
7.18
2.5 Fracture
ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
2.6 Cleavage
Perfect on {010}, good on {100}
1,2 prismatic.
2.7 Mohs Hardness
2.8 Chemical Composition
Be 2BO 3(OH)Ulrich Henn and Claudio C.
(Ca,Cr)MgSi 2O 6Gemdat.org , Management Team (2012)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
NilArthur Thomas
Common trichroism: light green
3.3 Dispersion
3.4 Transparency
Transparent
Gems, Sixth Edition (2006)
3.5 Refractive Index
1.543-1.6311.668-1.703
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.071-0.0740.024-0.030
0
0.296
3.9 Clarity
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