Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Southern and central Africa
Color
Blue, Green, Brownish, Greenish, Colorless, gray
Violet, Brownish, Black, pink, Red, Reddish
For which Rashi?
Not Available
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Planet
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Element of Planets
Not Available
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Finger
Not Available
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Ring Metal
Not Available
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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
Tough
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.20-3.26
3.2-3.4
Fracture
Splintery
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
{010} perfect
[100] [001] perfect
Mohs Hardness
6-7.5
4-4.5
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Luster
Vitreous, Subadamantine, Silky
Not Available
Pleochroism
Colourless to pale brown to yellow
StrongArthur Thomas
Dispersion
Not Available
Not Available
Transparency
Transparent, Translucent
TranslucentWalter Schumann, Gemstones of the world (2001) More from other references
Refractive Index
1.653-1.685
1.85-1.92
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.020-0.022
0.070
Clarity
Transparent
TranslucentWalter Schumann
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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Sillimanite Vs Purpurite Fracture
Fracture is an important parameter when you compare Sillimanite and Purpurite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Purpurite 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 Sillimanite is Splintery. Purpurite fracture is Brittle, Gemstones (2009), Uneven and UnevenArthur Thomas.
Sillimanite Vs Purpurite Luster
A primary knowledge about Sillimanite vs Purpurite 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 exhibits Silky, Subadamantine and Vitreous luster.