Origin
Brazil, Southern and central Africa
Sri Lanka
Color
Blue, Green, Black
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Green, gray
Streak
White
White, Brownish
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
-
insoluble
Durability
-
-
Specific Gravity
3.04-3.176.86-7.03
1
7.18
👆🏻
Fracture
Uneven
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
{001} Indistinct, {???} Indistinct
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
5.56-7
2
10
👆🏻
Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
-
Adamantine, Greasy
Pleochroism
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
Pleochroic haloes have been observed. Dichroic in yellow
Dispersion
0.010.07
0.005
1
👆🏻
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.604-1.6461.990-2.105
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
tetragonal
Birefringence
0.031-0.0360.096-0.098
0
0.296
👆🏻
Clarity
Transparent
Transparent
Physical
Neurological
Balances digestive system and reduces bloating
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Respiratory
Excellent
Poor
Reproductive
-
-
Digestive
Supports digestive health
-
Psychology
Clarity
Focus
Healing
Emotional healing
Emotional healing
Qualities Associated
Psychic Abilities
Manifestation