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Pleonaste Vs Grandidierite


Grandidierite Vs Pleonaste


Astrology

Origin
Madagascar, Sri Lanka   
Madagascar   

Color
White, Colorless, Blue, Red, Green, Yellow, Violet   
Green   

Streak
Not Available   
White   

For which Rashi?
Not Available   
Not Available   

Planet
Not Available   
Not Available   

Element of Planets
Not Available   
Not Available   

How to Wear?
  
  

Finger
Not Available   
Not Available   

Ring Metal
Not Available   
Not Available   

Energy
Not Available   
Not Available   

Deities
Not Available   
Not Available   

Not to wear with
Not Available   
Not Available   

Powers
Not Available   
Not Available   

Birthstone
  
  

Planetary
Not Available   
Not Available   

Talisman
Not Available   
Not Available   

Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.80   
2.85-3.00   

Fracture
Not Available   
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven   

Cleavage
Not Available   
Perfect   

Mohs Hardness
8   
7.5   

Chemical Composition
(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)   
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.   

Optical Properties

Luster
Not Available   
Vitreous, Pearly   

Pleochroism
Not Available   
visible   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004)   
Gemmological Tables (2004) More from other references   

Refractive Index
1.780   
1.578-1.639   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Orthorhombic   

Birefringence
Not Available   
0.037-0.039   

Clarity
Gemmological Tables (2004)   
Gemmological Tables (2004) More from other references   

Benefits

Physical
  
  

Neurological
Not Available   
Not Available   

Cardiovascular
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Not Available   

Respiratory
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Not Available   

Reproductive
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Digestive
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Not Available   

Psychology
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Healing
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Qualities Associated
Not Available   
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Pleonaste Vs Grandidierite Fracture

Fracture is an important parameter when you compare Pleonaste and Grandidierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Pleonaste Vs Grandidierite 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. Grandidierite fracture is Brittle, Brittle, Gemstones (2009), Uneven and UnevenArthur Thomas.

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Pleonaste Vs Grandidierite Luster

A primary knowledge about Pleonaste vs Grandidierite 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. Grandidierite, on other hand, exhibits Pearly and Vitreous luster.

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