Gedrite Vs Powellite
Origin
Southern and central Africa
India
Color
Brown, Brown, Green, Green, gray, White
Yellow, Greenish, Blue, Brown, Green, gray
Streak
gray, White, gray, White
Yellow
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
3.15-3.259
4.23
Fracture
Not Available
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
{111} Distinct
Mohs Hardness
5.5-6
3.5-4
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Fibrous, Vitreous
Greasy, Subadamantine
Pleochroism
Weak to moderate
In deeply colored specimens: blue greenAnthony et al
Dispersion
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Transparency
Transparent
Transparent
Refractive Index
1.625-1.718
1.974-1.984
Optic Character
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Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
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Birefringence
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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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Gedrite Vs Powellite Fracture
Fracture is an important parameter when you compare Gedrite and Powellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gedrite Vs Powellite 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. Powellite fracture is Brittle, Conchoidal, Handbook of mineralogy (2001), Handbook of mineralogy (2001), UnevenAnthony et al and UnevenAnthony et al.
Gedrite Vs Powellite Luster
A primary knowledge about Gedrite vs Powellite 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. Gedrite exhibits Fibrous and Vitreous luster. Powellite, on other hand, exhibits Greasy and Subadamantine luster.