Origin
Brazil, Southern and central Africa
-
Color
Blue, Green, Black
Colorless, Yellow, Brown, Green, Red, Reddish
Streak
White
White, Yellow, Colorless
For which Rashi?
Gemini, Sagittarius
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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
3.04-3.173.0-3.1
1
7.18
👆🏻
Fracture
Uneven
-
Cleavage
{001} Indistinct, {???} Indistinct
Perfect on {001}
Mohs Hardness
5.53.5
2
10
👆🏻
Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Ca(Mg,Al)3(Al3Si)O10(OH)2
Luster
-
Vitreous, Pearly
Pleochroism
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
X = colorless
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
Transparent, Translucent
-
Refractive Index
1.604-1.6461.643-1.648
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
monoclinic
Birefringence
0.031-0.0360.012-0.015
0
0.296
👆🏻
Clarity
Transparent
-
Physical
Neurological
Balances digestive system and reduces bloating
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Cardiovascular
-
-
Respiratory
Excellent
Poor
Reproductive
-
-
Digestive
Supports digestive health
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Psychology
Clarity
-
Healing
Emotional healing
Emotional healing
Qualities Associated
Psychic Abilities
Creativity