Astrology
Origin
Canada, Brazil, Kenya, Tanzania, Madagascar, Burma, Afghanistan
the type locality
Color
Violet, White, gray, Brown, pink, Yellow
Blue, Green
Streak
White
Blue
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
Energy
Not Available
Not Available
How to Wear?
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Not Available
Not Available
Birthstone
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.58-2.74
3.80-4.15
Fracture
ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Splintery
Uneven, UnevenArthur Thomas, Gemstones (2009)
Cleavage
{100} Distinct, {110} Distinct
perfect along [010] and [100]
Mohs Hardness
5.5-6
3.5-4
Chemical Composition
Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Optical Properties
Luster
Not Available
Silky
Pleochroism
Not Available
X = very pale blue; Y = pale blue; Z = deep blue
Dispersion
0.02
22
Not Available
Transparency
Gemmological Tables (2004) More from other references
Translucent
Refractive Index
1.540-1.579
1.752-1.815
Optic Character
Not Available
Not Available
Crystal System
tetragonal
Orthorhombic
Birefringence
0.006-0.037
0.063
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent
Benefits
Physical
Neurological
Not Available
Not Available
Cardiovascular
Not Available
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Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
