Origin
Italy, China
Brazil, Southern and central Africa
Color
Colorless, White, Blue, gray
Blue, Green, Black
Streak
White
White
For which Rashi?
-
Gemini, Sagittarius
Planet
-
Jupiter
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.093.04-3.17
1
7.18
👆🏻
Fracture
Uneven
Uneven
Cleavage
Perfect on {100} and {010}, imperfect on {101}
{001} Indistinct, {???} Indistinct
Mohs Hardness
85.5
2
10
👆🏻
Chemical Composition
CaAl2Si2O7(OH)2.H2O
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Luster
Vitreous, Greasy
-
Pleochroism
Weak
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
Dispersion
0.010.01
0.005
1
👆🏻
Transparency
-
Transparent, Translucent
Refractive Index
1.672-1.6761.604-1.646
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
monoclinic
Birefringence
0.019-0.0210.031-0.036
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
-
Balances digestive system and reduces bloating
Cardiovascular
-
-
Respiratory
Good
Excellent
Reproductive
-
-
Digestive
-
Supports digestive health
Psychology
-
Clarity
Healing
Emotional healing
Emotional healing
Qualities Associated
-
Psychic Abilities