Origin
Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia
Southern and central Africa
Color
Green, Brown, Colorless, Greenish, Yellow
Violet, Blue, Red, Yellow, Brown, gray
For which Rashi?
Not Available
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Planet
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Element of Planets
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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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Planetary
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Talisman
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Tenacity
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Brittle
Solubility
Not Available
insoluble
Durability
Not Available
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Specific Gravity
3.25-3.45
3.90-4.05
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven
Uneven, Uneven, Gems, Difficult, Fibrous
Cleavage
Good on {110}
None – parting in 3 directions
Chemical Composition
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Al 2O 3Arthur Thomas , Gemstones (2009)
Luster
Vitreous
Adamantine, Vitreous
Pleochroism
X = colorless to green; Y = colorless
None
Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent
Refractive Index
1.660-1.685
1.758-1.780
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Trigonal
Birefringence
0.012-0.017
0.007-0.010
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Gemmological Tables (2004) More from other references
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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Kornerupine Vs Corundum Fracture
Fracture is an important parameter when you compare Kornerupine and Corundum Physical Properties. It is necessary to understand the significance of these properties, before you compare Kornerupine Vs Corundum 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 Kornerupine is Brittle, ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009), Gemstones (2009) and Uneven. Corundum fracture is Difficult, Fibrous, Gems, Uneven and Uneven.
Kornerupine Vs Corundum Luster
A primary knowledge about Kornerupine vs Corundum 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. Kornerupine exhibits Vitreous luster. Corundum, on other hand, exhibits Adamantine and Vitreous luster.