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Forsterite Vs Dravite


Dravite Vs Forsterite


Astrology

Origin
Southern and central Africa  
Southern and central Africa  

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

Streak
White  
Colorless  

For which Rashi?
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-  

Planet
-  
-  

Element of Planets
-  
-  

Energy
-  
-  

How to Wear?
  
  

Finger
  
-  

Ring Metal
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-  

Deities
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-  

Not to wear with
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-  

Powers
-  
-  

Birthstone
  
  

Planetary
-  
-  

Talisman
-  
-  

Physical Properties

Tenacity
-  
-  

Solubility
-  
-  

Durability
-  
-  

Specific Gravity
3.23-3.26  
3.03-3.18  

Fracture
Conchoidal  
Uneven, Irregular, Conchoidal  

Cleavage
Perfect on {010} imperfect on {100}  
{???} Indistinct  

Mohs Hardness
6.5-7  
7-7.5  

Chemical Composition
Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)  
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)  

Optical Properties

Luster
Vitreous  
Vitreous  

Pleochroism
colorless.  
Very strong: pale yellow colorless  

Dispersion
0.02  
99+
0.02  
99+

Transparency
Transparent  
Transparent  

Refractive Index
1.635-1.671  
1.614-1.666  

Optic Character
-  
-  

Crystal System
Orthorhombic  
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m  

Birefringence
0.033-0.042  
0.014-0.032  

Clarity
Transparent  
Transparent  

Benefits

Physical
  
  

Neurological
-  
-  

Cardiovascular
-  
-  

Respiratory
Good  
-  

Reproductive
Supports healthy digestion  
-  

Digestive
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-  

Psychology
Peace  
Self-acceptance  

Healing
Physical healing  
Emotional healing  

Qualities Associated
Peace  
Self-Exploration  

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Forsterite Vs Dravite Fracture

Fracture is an important parameter when you compare Forsterite and Dravite Physical Properties. It is necessary to understand the significance of these properties, before you compare Forsterite Vs Dravite 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 Forsterite is Conchoidal. Dravite fracture is Uneven, Irregular and Conchoidal.

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Forsterite Vs Dravite Luster

A primary knowledge about Forsterite vs Dravite 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. Forsterite exhibits Vitreous luster. Dravite, on other hand, exhibits Vitreous luster.

Green Gemstones

Green Gemstones


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