Origin
USA, Mexico, Tanzania, Brazil, Pakistan, Afghanistan, Origins: USA
Canada, Russia
Color
Green, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey
Brown, Yellow, Greenish, Brownish, Red
Streak
White
Brown, White
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.26-3.363.2-3.4
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
Good on {100}
Perfect on [001] imperfect on [100]
Mohs Hardness
6.5-73
2
10
👆🏻
Chemical Composition
(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous
Greasy, Pearly
Pleochroism
Strong
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Dispersion
0.020.12
0.005
1
👆🏻
Transparency
-
Translucent
Refractive Index
1.656-1.7041.678-1.758
1
3.25
👆🏻
Optic Character
Biaxial/+
-
Crystal System
Triclinic
Triclinic
Birefringence
0.009-0.0120.050
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent
Physical
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Respiratory
Good
Excellent
Reproductive
-
-
Digestive
-
-
Psychology
Harmony
Self-Reflection
Healing
Emotional healing
Spiritual healing
Qualities Associated
Balance
Self-Reflection