1 Astrology
1.1 Origin
Southern and central Africa
Colombia, Zambia, Brazil, Madagascar, Southern and central Africa, Zimbabwe, Russia, India, Pakistan, Australia, USA, Not Available, Mexico, Spain
1.2 Color
Violet, Blue, Red, Yellow, Brown, gray
Green, Green, Blue, Yellow, Grey
1.3 Streak
1.4 For which Rashi?
Not Available
Taurus, Gemini, Aries, Taurus, Gemini, Aries, Taurus, Gemini, Aries
1.5 Planet
Not Available
Venus, Mercury
1.6 Element of Planets
1.7 How to Wear?
1.7.1 Finger
Not Available
Not Available
1.7.2 Ring Metal
1.8 Energy
1.9 Deities
Not Available
Diana, Artemis, Venus, Freyja
1.10 Not to wear with
Not Available
Red Coral, Natural Pearl, Moonstone, Ruby, Red Coral, Natural Pearl, Moonstone, Ruby
1.11 Powers
Not Available
Money, Protection, Love, Courage
1.12 Birthstone
1.12.1 Planetary
1.12.2 Talisman
2 Physical Properties
2.1 Tenacity
2.2 Solubility
2.3 Durability
2.4 Specific Gravity
3.90-4.052.67-2.78
1
7.18
2.5 Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
2.6 Cleavage
None – parting in 3 directions
Imperfect on the [0001]
2.7 Mohs Hardness
2.8 Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
Be3Al2SiO6
3 Optical Properties
3.1 Luster
Adamantine, Vitreous
Vitreous
3.2 Pleochroism
None
Strong dichroism: yellow green Lazzarelli
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Transparent, Translucent, Transparent to translucent
3.5 Refractive Index
1.758-1.7801.565-1.602
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.007-0.0100.0040-0.0070
0
0.296
3.9 Clarity
Gemmological Tables (2004) More from other references
Color grading system
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