Origin
Burma, Sri Lanka, India, Madagascar, Kenya, Tanzania, Thailand, Cambodia, China, Australia, USA
-
Color
Colorless, Yellow, Green, Violet, White, Blue, Red, pink
Blue, Green
Streak
-
Blue
For which Rashi?
Pisces, Taurus, Gemini, Libra
-
Planet
Saturn
-
Element of Planets
Water
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
Apollo
-
Not to wear with
-
-
Powers
Psychic Power
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
insoluble
-
Durability
-
-
Specific Gravity
3.95-4.033.80-4.15
1
7.18
👆🏻
Fracture
Uneven
Uneven
Cleavage
None, but may exhibit parting
perfect along [010] and [100]
Mohs Hardness
93.5-4
2
10
👆🏻
Chemical Composition
Al 2 O 3
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Adamantine
Silky
Pleochroism
Strong
X = very pale blue; Y = pale blue; Z = deep blue
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Transparent, Translucent, Transparent to opaque
Translucent
Refractive Index
1.762-1.7881.752-1.815
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Trigonal
Orthorhombic
Birefringence
0.008-0.0090.063
0
0.296
👆🏻
Clarity
Transparent
Translucent
Physical
Neurological
Enhances mental clarity and focus
-
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Intuition
Communication
Healing
Emotional healing
Emotional healing
Qualities Associated
Wisdom
Communication