Rossmanite Vs Sillimanite
Origin
Italy
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Color
pink, Pale pink
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
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Specific Gravity
3
3.20-3.26
Fracture
Brittle, Metallic
Splintery
Cleavage
None
{010} perfect
Mohs Hardness
Not Available
6-7.5
Chemical Composition
◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Not Available
Vitreous, Subadamantine, Silky
Pleochroism
Not Available
Colourless to pale brown to yellow
Dispersion
Not Available
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Transparency
TransparentWebmineral.com, Mineralogy Database (2012)
Transparent, Translucent
Refractive Index
1.624-1.645
1.653-1.685
Optic Character
Not Available
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Crystal System
Not Available
Orthorhombic
Birefringence
0.021
0.020-0.022
Clarity
TransparentWebmineral.com
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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Rossmanite Vs Sillimanite Fracture
Fracture is an important parameter when you compare Rossmanite and Sillimanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Rossmanite 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 Rossmanite is Brittle and Metallic. Sillimanite fracture is Splintery.
Rossmanite Vs Sillimanite Luster
A primary knowledge about Rossmanite 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. Sillimanite, on other hand, exhibits Vitreous, Subadamantine and Silky luster.