Origin
Southern and central Africa
Brazil, Southern and central Africa
Color
Colorless, Blue, Brown, Green, gray
Blue, Green, Black
Streak
White
White
For which Rashi?
Gemini
Gemini, Sagittarius
Planet
Venus, Neptune
Jupiter
Element of Planets
Water, Air
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
Healing
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.90-4.003.04-3.17
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
Perfect on {001}, good on {210}, poor on {010}
{001} Indistinct, {???} Indistinct
Mohs Hardness
3-3.55.5
2
10
👆🏻
Chemical Composition
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Luster
Vitreous, Pearly
-
Pleochroism
Weakly trichroiC
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
1.619-1.6351.604-1.646
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
monoclinic
Birefringence
0.004-0.0120.031-0.036
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
Enhances mental clarity and focus
Balances digestive system and reduces bloating
Cardiovascular
Supports heart health
-
Respiratory
Good
Excellent
Reproductive
-
-
Digestive
-
Supports digestive health
Psychology
Peace
Clarity
Healing
Emotional healing
Emotional healing
Qualities Associated
Divine Guidance
Psychic Abilities