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Proustite Vs Dumortierite


Dumortierite Vs Proustite


Astrology

Origin
Southern and central Africa   
Southern and central Africa, violet, blue, violet, blue   

Color
Black, Reddish, gray   
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink   

Streak
Black, Red   
White   

For which Rashi?
Not Available   
Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius   

Planet
Not Available   
Saturn   

Element of Planets
Not Available   
Water   

How to Wear?
  
  

Finger
Not Available   
Not Available   

Ring Metal
Not Available   
Not Available   

Energy
Not Available   
Receptive   

Deities
Not Available   
Isis   

Not to wear with
Not Available   
Not Available   

Powers
Not Available   
Healing   

Birthstone
  
  

Planetary
Not Available   
Not Available   

Talisman
Not Available   
Not Available   

Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
5.51-5.64   
3.26-3.41   

Fracture
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle   
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references   

Cleavage
Distinct on {10 1 1}   
Distinct on {100}, poor on {110}; parting on {001}   

Mohs Hardness
2.5   
7-8.5   

Chemical Composition
Ag 3AsS 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
AlAl6O3BSi3O18   

Optical Properties

Luster
Adamantine   
Vitreous   

Pleochroism
Moderate; cochineal-red to blood-red   
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue   

Dispersion
Not Available   
None   

Transparency
OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Rarely transparentMore from other references   
Translucent, Translucent to opaque   

Refractive Index
2.792-3.087   
1.669-1.723   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Orthorhombic   

Birefringence
0.295-0.296   
0.011-0.037   

Clarity
OpaqueUlrich Henn and Claudio C. Milisenda   
Translucent   

Benefits

Physical
  
  

Neurological
Not Available   
Not Available   

Cardiovascular
Not Available   
Not Available   

Respiratory
Not Available   
Not Available   

Reproductive
Not Available   
Not Available   

Digestive
Not Available   
Not Available   

Psychology
Not Available   
Not Available   

Healing
Not Available   
Not Available   

Qualities Associated
Not Available   
Not Available   

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Proustite Vs Dumortierite Fracture

Fracture is an important parameter when you compare Proustite and Dumortierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Proustite Vs Dumortierite 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 Proustite is Brittle, ConchoidalArthur Thomas, Gemstones (2009), Uneven and Uneven. Dumortierite fracture is ConchoidalWalter Schumann, Fibrous and Gemstones of the world (2001) More from other references.

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Proustite Vs Dumortierite Luster

A primary knowledge about Proustite vs Dumortierite 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. Proustite exhibits Adamantine luster. Dumortierite, on other hand, exhibits Vitreous luster.

Black Gemstones

Black Gemstones


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