Origin
Southern and central Africa
Spain, Brazil, USA, Sri Lanka, Burma, Color: strongly pleochroic, reddish brown, pink / yellowish green, Hardness: 7 7.5, Refractive index: 1.63 1.65, Density: 3.13 3.21, Chemical composition: Al2SiO5, Crystal structure: orthorhombic, Lustre: vitreous, greasy, Origins: Spain, Brazil, USA, Sri Lanka, Burma. Discovered in Andalusia (Spain), the andalusite stone is relatively rare, with big crystals over 10 ct. especially rare. Due to its remarkable pleochroism effect, the stone is highly valued by collectors., brown
Color
Green
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Green, gray, Brown, Red
Streak
Greenish, White
White
For which Rashi?
Not Available
All
Planet
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Venus
Element of Planets
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Finger
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Ring Metal
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Energy
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Projective, Receptive
Deities
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Not to wear with
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Powers
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Planetary
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Talisman
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Tenacity
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Solubility
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Durability
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Specific Gravity
3.16-3.43
3.05-3.21
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
{110} Good, {110} Good
Good on {110}, poor on {100}
Chemical Composition
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Vitreous
Vitreous, Greasy
Pleochroism
Weak: colorless -- very pale green -- very pale green
strongly trichroic
Transparency
TranslucentAnthony et al, Handbook of mineralogy (2001)
Transparent, Translucent
Refractive Index
1.662-1.723
1.627-1.650
Optic Character
Not Available
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Crystal System
Not Available
Orthorhombic
Birefringence
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0.009-0.010
Clarity
TranslucentAnthony et al
Transparent
Neurological
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Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
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Healing
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Qualities Associated
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Omphacite Vs Andalusite Fracture
Fracture is an important parameter when you compare Omphacite and Andalusite Physical Properties. It is necessary to understand the significance of these properties, before you compare Omphacite Vs Andalusite fracture. Whenever a gemstone chip breaks, it leaves a characteristic line along its breakage. Such lines are known as fracture and are used to identify the gemstones in their initial stages of production when they are in the form of rough minerals. Fracture is usually described with the terms “fibrous” and “splintery” to denote a fracture that usually leaves elongated and sharp edges. Fracture observed in Omphacite is Brittle, Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Uneven and Uneven. Andalusite fracture is Gemstones (2009), Splintery, Subconchoidal, Subconchoidal, Uneven, Uneven and UnevenArthur Thomas.
Omphacite Vs Andalusite Luster
A primary knowledge about Omphacite vs Andalusite luster is useful in apparent identifications of these gemstones. Luster is the measure of light that gets reflected when incident on a finished cut gemstone. There are two major types of lusters: Silky and Adamantine. Since luster varies between two crystals of even the same gemstone, luster is limited to basic identification criteria. Omphacite exhibits Vitreous luster. Andalusite, on other hand, exhibits Greasy and Vitreous luster.