Sillimanite Vs Jet
Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Spain
Color
Blue, Green, Brownish, Greenish, Colorless, gray
Black
Streak
White
Not Available
For which Rashi?
Not Available
Capricorn
Planet
Not Available
Saturn
Element of Planets
Not Available
Earth
Energy
Not Available
Receptive
Finger
Not Available
Not Available
Ring Metal
Not Available
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Deities
Not Available
Cybele
Not to wear with
Not Available
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Powers
Not Available
Protection
Planetary
Not Available
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Talisman
Not Available
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Tenacity
Tough
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
1.19-1.35
Fracture
Splintery
ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
{010} perfect
Not Available
Mohs Hardness
6-7.5
2.5-4
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Not Available
Luster
Vitreous, Subadamantine, Silky
Waxy
Pleochroism
Colourless to pale brown to yellow
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
Refractive Index
1.653-1.685
1.640-1.680
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Amorphous
Birefringence
0.020-0.022
Not Available
Clarity
Transparent
Gemmological Tables (2004) More from other references
Neurological
Not Available
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Cardiovascular
Not Available
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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 Jet Fracture
Fracture is an important parameter when you compare Sillimanite and Jet Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Jet 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. Jet fracture is ConchoidalWalter Schumann, ConchoidalWalter Schumann and Gemstones of the world (2001) More from other references.
Sillimanite Vs Jet Luster
A primary knowledge about Sillimanite vs Jet 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 Vitreous, Subadamantine and Silky luster. Jet, on other hand, exhibits Waxy luster.
