Omphacite Vs Sillimanite
Origin
Southern and central Africa
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Color
Green
Blue, Green, Brownish, Greenish, Colorless, gray
Streak
Greenish, White
White
For which Rashi?
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Planet
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Element of Planets
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Finger
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Ring Metal
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Energy
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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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Tough
Solubility
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Durability
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Specific Gravity
3.16-3.43
3.20-3.26
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Splintery
Cleavage
{110} Good, {110} Good
{010} perfect
Chemical Composition
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous
Vitreous, Subadamantine, Silky
Pleochroism
Weak: colorless -- very pale green -- very pale green
Colourless to pale brown to yellow
Dispersion
Not Available
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Transparency
TranslucentAnthony et al, Handbook of mineralogy (2001)
Transparent, Translucent
Refractive Index
1.662-1.723
1.653-1.685
Optic Character
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Crystal System
Not Available
Orthorhombic
Birefringence
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0.020-0.022
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 Sillimanite Fracture
Fracture is an important parameter when you compare Omphacite and Sillimanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Omphacite Vs Sillimanite 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. Sillimanite fracture is Splintery.
Omphacite Vs Sillimanite Luster
A primary knowledge about Omphacite vs Sillimanite 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. Sillimanite, on other hand, exhibits Silky, Subadamantine and Vitreous luster.