Powellite Vs Oligoclase
Origin
India
Southern and central Africa
Color
Yellow, Greenish, Blue, Brown, Green, gray
Colorless, Brown, Greenish, 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
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Solubility
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Durability
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Specific Gravity
4.23
2.62-2.67
Fracture
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven
Cleavage
{111} Distinct
From the Greek, oligos and kasein, little cleavage.
Mohs Hardness
3.5-4
6-6.5
Chemical Composition
CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Greasy, Subadamantine
Vitreous
Pleochroism
In deeply colored specimens: blue greenAnthony et al
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Dispersion
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Transparency
Transparent
Gemmological Tables (2004)
Refractive Index
1.974-1.984
1.538-1.550
Optic Character
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Crystal System
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Birefringence
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0.010
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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Powellite Vs Oligoclase Fracture
Fracture is an important parameter when you compare Powellite and Oligoclase Physical Properties. It is necessary to understand the significance of these properties, before you compare Powellite Vs Oligoclase 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 Powellite is Brittle, Conchoidal, Handbook of mineralogy (2001), Handbook of mineralogy (2001), UnevenAnthony et al and UnevenAnthony et al. Oligoclase fracture is Gems, Gems, Sixth Edition (2006), Sixth Edition (2006) and Uneven.
Powellite Vs Oligoclase Luster
A primary knowledge about Powellite vs Oligoclase 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. Powellite exhibits Greasy and Subadamantine luster. Oligoclase, on other hand, exhibits Vitreous luster.