Sillimanite Vs Shigaite
Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Not Available
Color
Blue, Green, Brownish, Greenish, Colorless, gray
Yellow, Brown, Black, orange
Streak
White
Yellow, White
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
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
Not Available
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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
Not Available
Tenacity
Tough
Moderately flexible
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
2.32
Fracture
Splintery
Flexible Flexible fragments.
Cleavage
{010} perfect
Perfect on {0001}
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Not Available
Luster
Vitreous, Subadamantine, Silky
Vitreous
Pleochroism
Colourless to pale brown to yellow
Distinct
Dispersion
Not Available
Not Available
Transparency
Transparent, Translucent
Not Available
Refractive Index
1.653-1.685
1.546
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Trigonal
Birefringence
0.020-0.022
Not Available
Clarity
Transparent
Not Available
Neurological
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Cardiovascular
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Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
Not Available
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Qualities Associated
Not Available
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Sillimanite Vs Shigaite Fracture
Fracture is an important parameter when you compare Sillimanite and Shigaite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Shigaite 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. Shigaite fracture is Flexible Flexible fragments..
Sillimanite Vs Shigaite Luster
A primary knowledge about Sillimanite vs Shigaite 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. Shigaite, on other hand, exhibits Vitreous luster.