1 Astrology
1.1 Origin
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Australia, Southern and central Africa
1.2 Color
Blue, Violet, Colorless, Red, Green, Brown
Red, Yellow, Red, orange
1.3 Streak
1.4 For which Rashi?
Sagittarius, Scorpio, Sagittarius, Scorpio, Sagittarius, Scorpio
Not Available
1.5 Planet
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
1.9 Deities
1.10 Not to wear with
Not Available
Not Available
1.11 Powers
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
Not Available
Not Available
2.2 Solubility
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
3.64-3.665.90-6.10
1
7.18
2.5 Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
2.6 Cleavage
None, but may exhibit slight parting
{110} Distinct, {001} Indistinct, {100} Indistinct
2.7 Mohs Hardness
2.8 Chemical Composition
MgAl2O4
PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Absent
Distinctly trichroic
3.3 Dispersion
3.4 Transparency
Transparent, Translucent, Transparent to translucent
Transparent
3.5 Refractive Index
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
Isometric
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
3.8 Birefringence
Not AvailableNot Available
0
0.296
1.1 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
2 Benefits
2.2 Physical
2.2.1 Neurological
Not Available
Not Available
2.3.1 Cardiovascular
Not Available
Not Available
2.4.1 Respiratory
Not Available
Not Available
2.5.1 Reproductive
Not Available
Not Available
2.6.1 Digestive
Not Available
Not Available
2.8 Psychology
Not Available
Not Available
2.9 Healing
Not Available
Not Available
2.11 Qualities Associated
Not Available
Not Available