Sillimanite Vs Selenite
Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Southern and central Africa
Color
Blue, Green, Brownish, Greenish, Colorless, gray
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Streak
White
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For which Rashi?
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Cancer
Planet
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Moon
Element of Planets
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Water
Finger
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Ring Metal
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Energy
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Receptive
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
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Durability
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Specific Gravity
3.20-3.26
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Fracture
Splintery
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Cleavage
{010} perfect
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Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
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Luster
Vitreous, Subadamantine, Silky
Vitreous
Pleochroism
Colourless to pale brown to yellow
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Dispersion
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Transparency
Transparent, Translucent
Transparent
Refractive Index
1.653-1.685
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Optic Character
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Crystal System
Orthorhombic
monoclinic
Birefringence
0.020-0.022
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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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Sillimanite Vs Selenite Fracture
Fracture is an important parameter when you compare Sillimanite and Selenite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Selenite 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.
Sillimanite Vs Selenite Luster
A primary knowledge about Sillimanite vs Selenite 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. Selenite, on other hand, exhibits Vitreous luster.