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Gedrite Vs Powellite


Powellite Vs Gedrite


Astrology

Origin
Southern and central Africa  
India  

Color
Brown, Green, gray, White  
Yellow, Greenish, Blue, Brown, Green, gray  

Streak
gray, White  
Yellow  

For which Rashi?
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-  

Planet
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-  

Element of Planets
-  
-  

Energy
-  
-  

How to Wear?
  
  

Finger
-  
-  

Ring Metal
-  
-  

Deities
-  
-  

Not to wear with
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-  

Powers
-  
-  

Birthstone
  
  

Planetary
-  
-  

Talisman
-  
-  

Physical Properties

Tenacity
-  
-  

Solubility
-  
-  

Durability
-  
-  

Specific Gravity
3.15-3.259  
4.23  

Fracture
-  
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 O’Donoghue , Gems, Sixth Edition (2006)  

Optical Properties

Luster
Vitreous  
Greasy, Subadamantine  

Pleochroism
Weak to moderate  
In deeply colored specimens: blue greenAnthony et al  

Dispersion
0.02  
99+
0.03  
99+

Transparency
Transparent  
Transparent  

Refractive Index
1.625-1.718  
1.974-1.984  

Optic Character
-  
-  

Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma  
-  

Birefringence
-9999  
-9999  

Clarity
Transparent  
Transparent  

Benefits

Physical
  
  

Neurological
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Cardiovascular
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Respiratory
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Good  

Reproductive
-  
-  

Digestive
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Psychology
Focus  
-  

Healing
-  
Emotional healing  

Qualities Associated
Protection  
Vitality  

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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 Conchoidal.

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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 Vitreous luster. Powellite, on other hand, exhibits Greasy and Subadamantine luster.

Brown Gemstones

Brown Gemstones


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