Sillimanite Vs Fluorapatite
Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Southern and central Africa
Color
Blue, Green, Brownish, Greenish, Colorless, gray
Violet, Blue, Yellow, Brown, White, Colorless
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
Tough
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Solubility
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Durability
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Specific Gravity
3.20-3.26
3.1-3.25
Fracture
Splintery
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Cleavage
{010} perfect
Indistinct
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
Luster
Vitreous, Subadamantine, Silky
Vitreous, Resinous
Pleochroism
Colourless to pale brown to yellow
Weak to strong if coloreD
Dispersion
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Transparency
Transparent, Translucent
Transparent
Refractive Index
1.653-1.685
1.631-1.650
Optic Character
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Crystal System
Orthorhombic
Hexagonal
Birefringence
0.020-0.022
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Clarity
Transparent
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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Sillimanite Vs Fluorapatite Fracture
Fracture is an important parameter when you compare Sillimanite and Fluorapatite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Fluorapatite 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 Sillimanite is Splintery. Fluorapatite fracture is ConchoidalAnthony et al, Handbook of mineralogy (2001), Uneven and Uneven.
Sillimanite Vs Fluorapatite Luster
A primary knowledge about Sillimanite vs Fluorapatite 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. Sillimanite exhibits Silky, Subadamantine and Vitreous luster. Fluorapatite, on other hand, exhibits Resinous and Vitreous luster.