Fluorapatite Vs Gahnite
Origin
Southern and central Africa
Australia
Color
Violet, Blue, Yellow, Brown, White, Colorless
Blue, Green, Greenish, Black
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
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Solubility
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Durability
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Specific Gravity
3.1-3.25
4.00-4.62
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Conchoidal, Uneven
Cleavage
Indistinct
Indistinct parting on [111]
Chemical Composition
Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous, Resinous
Vitreous
Pleochroism
Weak to strong if coloreD
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Dispersion
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Transparency
Transparent
Gemmological Tables (2004) More from other references
Refractive Index
1.631-1.650
1.790-1.818
Optic Character
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Crystal System
Hexagonal
cubic
Birefringence
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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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Fluorapatite Vs Gahnite Fracture
Fracture is an important parameter when you compare Fluorapatite and Gahnite Physical Properties. It is necessary to understand the significance of these properties, before you compare Fluorapatite 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 Fluorapatite is ConchoidalAnthony et al, Handbook of mineralogy (2001), Uneven and Uneven. Gahnite fracture is Conchoidal and Uneven.
Fluorapatite Vs Gahnite Luster
A primary knowledge about Fluorapatite 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. Fluorapatite exhibits Resinous and Vitreous luster. Gahnite, on other hand, exhibits Vitreous luster.