Origin
Russia
Brazil, Southern and central Africa
Color
Black, Violet, Blue, Green
Blue, Green, Black
Streak
-
White
For which Rashi?
Gemini, Virgo
Gemini, Sagittarius
Planet
Mercury
Jupiter
Element of Planets
Earth
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.22-3.403.04-3.17
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
1,2 prismatic.
{001} Indistinct, {???} Indistinct
Mohs Hardness
5-65.5
2
10
👆🏻
Chemical Composition
(Ca,Cr)MgSi 2O 6Gemdat.org , Management Team (2012)
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Luster
Vitreous
-
Pleochroism
Common trichroism: light green
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
-
Transparent, Translucent
Refractive Index
1.668-1.7031.604-1.646
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
monoclinic
Birefringence
0.024-0.0300.031-0.036
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
-
Balances digestive system and reduces bloating
Cardiovascular
Supports heart health
-
Respiratory
Good
Excellent
Reproductive
-
-
Digestive
-
Supports digestive health
Psychology
Renewal
Clarity
Healing
Physical healing
Emotional healing
Qualities Associated
Love
Psychic Abilities