London blue topaz Vs Pargasite
Origin
Not Available
Southern and central Africa, Vietnam
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Green, Black, Brown
Streak
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White
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
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3.04-3.26
Fracture
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Splintery, Brittle, Uneven
Cleavage
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{110} perfect
Mohs Hardness
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5-6
Chemical Composition
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NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
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Vitreous
Pleochroism
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Dispersion
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Transparency
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Transparent
Refractive Index
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1.613-1.663
Optic Character
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Crystal System
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monoclinic
Birefringence
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0.020
Clarity
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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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London blue topaz Vs Pargasite Fracture
Fracture is an important parameter when you compare London blue topaz and Pargasite Physical Properties. It is necessary to understand the significance of these properties, before you compare London blue topaz Vs Pargasite 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. Pargasite fracture is Brittle, Splintery and Uneven.
London blue topaz Vs Pargasite Luster
A primary knowledge about London blue topaz vs Pargasite 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. Pargasite, on other hand, exhibits Vitreous luster.