Gahnite Vs Hibonite
Origin
Australia
Madagascar
Color
Blue, Green, Greenish, Black
Brownish, Black, Reddish, Brown, Blue
Streak
Grey, gray
Reddish, Brown
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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Solubility
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Durability
Not Available
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Specific Gravity
4.00-4.62
3.84
Fracture
Conchoidal, Uneven
Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Indistinct parting on [111]
{0001} good, {10 1 0} parting
Mohs Hardness
7.5-8
7.5-8
Chemical Composition
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
(Ca,Ce)(Al,Ti,Mg)12O19
Pleochroism
Not Available
O = brownish gray; E = gray
Dispersion
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Transparency
Gemmological Tables (2004) More from other references
Handbook of mineralogy (2001)
Refractive Index
1.790-1.818
1.79-1.807
Optic Character
Not Available
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Crystal System
cubic
Hexagonal
Birefringence
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Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Handbook of mineralogy (2001)
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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Gahnite Vs Hibonite Fracture
Fracture is an important parameter when you compare Gahnite and Hibonite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gahnite Vs Hibonite 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 Gahnite is Conchoidal and Uneven. Hibonite fracture is Brittle, Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001) and Subconchoidal.
Gahnite Vs Hibonite Luster
A primary knowledge about Gahnite vs Hibonite 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. Gahnite exhibits Vitreous luster. Hibonite, on other hand, exhibits Vitreous luster.