Uvite Vs Sillimanite
Origin
Sri Lanka
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Color
Red, Brown, Black
Blue, Green, Brownish, Greenish, Colorless, gray
For which Rashi?
Not Available
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Planet
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Element of Planets
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Energy
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Finger
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Ring Metal
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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
Not Available
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Durability
Not Available
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Specific Gravity
2.97-3.14
3.20-3.26
Fracture
Uneven, Conchoidal, Brittle
Splintery
Cleavage
{1011} Indistinct
{010} perfect
Mohs Hardness
Not Available
6-7.5
Chemical Composition
Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous
Vitreous, Subadamantine, Silky
Pleochroism
Pale yellow colorlessAnthony et al
Colourless to pale brown to yellow
Transparency
Transparent
Transparent, Translucent
Refractive Index
1.614-1.666
1.653-1.685
Optic Character
Not Available
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Crystal System
Not Available
Orthorhombic
Birefringence
0.014-0.032
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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Uvite Vs Sillimanite Fracture
Fracture is an important parameter when you compare Uvite and Sillimanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Uvite 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 Uvite is Uneven, Conchoidal and Brittle. Sillimanite fracture is Splintery.
Uvite Vs Sillimanite Luster
A primary knowledge about Uvite 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. Uvite exhibits Vitreous luster. Sillimanite, on other hand, exhibits Vitreous, Subadamantine and Silky luster.
