Caledonite Vs Gahnite
Color
Blue, Green, Blue, Green, Green
Blue, Green, Greenish, Black
Streak
Blue, Greenish, White
Grey, 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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Tenacity
Brittle
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Solubility
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Durability
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Specific Gravity
5.6-5.76
4.00-4.62
Fracture
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)
Conchoidal, Uneven
Cleavage
[001] perfect; [100] distinct
Indistinct parting on [111]
Mohs Hardness
2.5-3
7.5-8
Chemical Composition
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Pleochroism
Weak
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Dispersion
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Transparency
Transparent
Gemmological Tables (2004) More from other references
Refractive Index
1.818-1.909
1.790-1.818
Optic Character
Not Available
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Crystal System
Orthorhombic
cubic
Birefringence
0.091
Not Available
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
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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Caledonite Vs Gahnite Fracture
Fracture is an important parameter when you compare Caledonite and Gahnite Physical Properties. It is necessary to understand the significance of these properties, before you compare Caledonite Vs Gahnite 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 Caledonite is Handbook of mineralogy (2001), Uneven and UnevenAnthony et al. Gahnite fracture is Conchoidal and Uneven.
Caledonite Vs Gahnite Luster
A primary knowledge about Caledonite vs Gahnite 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. Caledonite exhibits Vitreous luster. Gahnite, on other hand, exhibits Vitreous luster.