Corundum Vs Hurlbutite
Origin
Southern and central Africa
USA
Color
Violet, Blue, Red, Yellow, Brown, gray
Colorless, Greenish, White, Yellow
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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Tenacity
Brittle
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Solubility
insoluble
Not Available
Durability
Not Available
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Specific Gravity
3.90-4.05
2.90
Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
None – parting in 3 directions
None
Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
CaBe 2(PO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Adamantine, Vitreous
Vitreous
Pleochroism
None
Not Available
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.758-1.780
1.595-1.604
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Birefringence
0.007-0.010
0.009
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 Hurlbutite Fracture
Fracture is an important parameter when you compare Corundum and Hurlbutite Physical Properties. It is necessary to understand the significance of these properties, before you compare Corundum Vs Hurlbutite 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. Hurlbutite fracture is Brittle, Conchoidal, ConchoidalAnthony et al, ConchoidalAnthony et al, Handbook of mineralogy (2001) and Handbook of mineralogy (2001).
Corundum Vs Hurlbutite Luster
A primary knowledge about Corundum vs Hurlbutite 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. Hurlbutite, on other hand, exhibits Vitreous luster.