Sillimanite Vs Prase
Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Southern and central Africa
Color
Blue, Green, Brownish, Greenish, Colorless, gray
Blue
Streak
White
Not Available
For which Rashi?
Not Available
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Planet
Not Available
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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
Not Available
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Deities
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Not to wear with
Not Available
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Powers
Not Available
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Planetary
Not Available
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Talisman
Not Available
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Tenacity
Tough
Not Available
Solubility
Not Available
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Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
2.64-2.69
Fracture
Splintery
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006)
Cleavage
{010} perfect
Not Available
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous, Subadamantine, Silky
Not Available
Pleochroism
Colourless to pale brown to yellow
Not Available
Dispersion
Not Available
Not Available
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.653-1.685
1.544-1.553
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Not Available
Birefringence
0.020-0.022
0.009
Clarity
Transparent
Transparent
Neurological
Not Available
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Cardiovascular
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Respiratory
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
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Healing
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Qualities Associated
Not Available
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Sillimanite Vs Prase Fracture
Fracture is an important parameter when you compare Sillimanite and Prase Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Prase 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. Prase fracture is Gems, Gems, Sixth Edition (2006) and Sixth Edition (2006).
Sillimanite Vs Prase Luster
A primary knowledge about Sillimanite vs Prase 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.