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Covellite Vs Sugilite


Sugilite Vs Covellite


Astrology

Origin
Mexico   
Canada, Southern and central Africa, Italy, Australia, India   

Color
Blue, Blue, Black   
Violet, Brownish, Yellow, Reddish, Pale pink   

Streak
Grey, Black, gray   
White   

For which Rashi?
Not Available   
Virgo   

Planet
Not Available   
Mercury, Jupiter   

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   
The All   

Not to wear with
Not Available   
Not Available   

Powers
Not Available   
Not Available   

Birthstone
  
  

Planetary
Not Available   
All   

Talisman
Not Available   
Not Available   

Physical Properties

Tenacity
Flexible   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
4.6-4.76   
2.69-2.79   

Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic   
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
Perfect on {0001}   
Poor on {0001}   

Mohs Hardness
Not Available   
5.5-6.5   

Chemical Composition
CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references   
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties

Luster
Resinous   
Vitreous   

Pleochroism
Marked   
Weak   

Dispersion
Not Available   
Not Available   

Transparency
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references   
Translucent   

Refractive Index
1.45-2.62   
1.607-1.612   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Hexagonal   

Birefringence
Not Available   
0.003   

Clarity
OpaqueAnthony et al   
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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Covellite Vs Sugilite Fracture

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

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Covellite Vs Sugilite Luster

A primary knowledge about Covellite vs Sugilite 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. Covellite exhibits Resinous luster. Sugilite, on other hand, exhibits Vitreous luster.

Blue Gemstones

Blue Gemstones


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