Origin
Southern and central Africa
Mexico
Color
Violet, Blue, Red, Yellow, Brown, gray
Colorless, Blue, Violet, White, Brown, Colorless, Blue, Violet, White, rose, Brown, gray, Colorless, White, Violet, gray, Colorless, White, Violet, gray
For which Rashi?
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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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Solubility
insoluble
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Durability
Not Available
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Specific Gravity
3.90-4.05
2.90-2.98
Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
None – parting in 3 directions
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Adamantine, Vitreous
Pearly, Greasy
Pleochroism
None
For violet varieties
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.758-1.780
1.570-1.614
Optic Character
Not Available
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Crystal System
Trigonal
Orthorhombic
Birefringence
0.007-0.010
0.042-0.044
Clarity
Gemmological Tables (2004) More from other references
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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Corundum Vs Anhydrite Fracture
Fracture is an important parameter when you compare Corundum and Anhydrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Corundum Vs Anhydrite 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 Corundum is Difficult, Fibrous, Gems, Uneven and Uneven. Anhydrite fracture is Brittle, Brittle, Conchoidal, Conchoidal, Conchoidal, Gemstones (2009) and UnevenArthur Thomas.
Corundum Vs Anhydrite Luster
A primary knowledge about Corundum vs Anhydrite 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. Corundum exhibits Adamantine and Vitreous luster. Anhydrite, on other hand, exhibits Greasy and Pearly luster.