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Gedrite Vs Grandidierite


Grandidierite Vs Gedrite


Astrology

Origin
Southern and central Africa  
Madagascar  

Color
Brown, Green, gray, White  
Green  

Streak
gray, White  
White  

For which Rashi?
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-  

Planet
-  
-  

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  
2.85-3.00  

Fracture
-  
Uneven  

Cleavage
Gedrite   Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.  
Perfect  

Mohs Hardness
5.5-6  
7.5  

Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)  
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.  

Optical Properties

Luster
Vitreous  
Vitreous, Pearly  

Pleochroism
Weak to moderate  
visible  

Dispersion
0.02  
99+
0.04  
36

Transparency
Transparent  
-  

Refractive Index
1.625-1.718  
1.578-1.639  

Optic Character
-  
-  

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

Birefringence
-9999  
0.037-0.039  

Clarity
Transparent  
-  

Benefits

Physical
  
  

Neurological
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Enhances mental clarity and focus  

Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
Focus  
Wisdom  

Healing
-  
Physical healing  

Qualities Associated
Protection  
Harmony  

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Gedrite Vs Grandidierite Fracture

Fracture is an important parameter when you compare Gedrite and Grandidierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gedrite 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 Uneven.

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Gedrite Vs Grandidierite Luster

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

Brown Gemstones

Brown Gemstones


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