Muscovite Vs Sillimanite
Origin
India
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Color
Colorless, White, gray, Brownish, Greenish
Blue, Green, Brownish, Greenish, Colorless, gray
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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Solubility
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Durability
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Specific Gravity
2.78-2.88
3.20-3.26
Fracture
Micaceous, Brittle
Splintery
Cleavage
Perfect on the {001}
{010} perfect
Chemical Composition
KAl 2AlSi 3O 10(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous, Silky, Pearly
Vitreous, Subadamantine, Silky
Pleochroism
Weak
Colourless to pale brown to yellow
Dispersion
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Transparency
Transparent
Transparent, Translucent
Refractive Index
1.552-1.618
1.653-1.685
Optic Character
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Crystal System
monoclinic
Orthorhombic
Birefringence
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0.020-0.022
Clarity
Transparent
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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Muscovite Vs Sillimanite Fracture
Fracture is an important parameter when you compare Muscovite and Sillimanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Muscovite 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 Muscovite is Brittle and Micaceous. Sillimanite fracture is Splintery.
Muscovite Vs Sillimanite Luster
A primary knowledge about Muscovite 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. Muscovite exhibits Pearly, Silky and Vitreous luster. Sillimanite, on other hand, exhibits Silky, Subadamantine and Vitreous luster.