Libyan Desert Glass Vs Sillimanite
Origin
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USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
  
Color
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Blue, Green, Brownish, Greenish, Colorless, gray
  
Streak
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White
  
For which Rashi?
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Planet
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Element of Planets
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How to Wear?
  
  
Finger
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Ring Metal
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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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Birthstone
  
  
Planetary
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Talisman
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Tenacity
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Tough
  
Solubility
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Durability
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Specific Gravity
2
  
3.20-3.26
  
Fracture
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Splintery
  
Cleavage
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{010} perfect
  
Mohs Hardness
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6-7.5
  
Chemical Composition
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Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Luster
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Vitreous, Subadamantine, Silky
  
Pleochroism
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Colourless to pale brown to yellow
  
Dispersion
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Transparency
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Transparent, Translucent
  
Refractive Index
1.46-1.465
  
1.653-1.685
  
Optic Character
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Crystal System
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Orthorhombic
  
Birefringence
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0.020-0.022
  
Clarity
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Transparent
  
Physical
  
  
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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Libyan Desert Glass Vs Sillimanite Fracture
Fracture is an important parameter when you compare Libyan Desert Glass and Sillimanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Libyan Desert Glass 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. Sillimanite fracture is Splintery.
Libyan Desert Glass Vs Sillimanite Luster
A primary knowledge about Libyan Desert Glass 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 Silky, Subadamantine and Vitreous luster.