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Nepheline
Nepheline

Covellite
Covellite



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Nepheline
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Covellite

Nepheline Vs Covellite

1 Astrology
1.1 Origin
Canada
Mexico
1.2 Color
White, Reddish, gray, Brown, Brownish
Blue, Blue, Black
1.3 Streak
White
Grey, Black, gray
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
Not Available
1.6 Element of Planets
Not Available
Not Available
1.7 How to Wear?
1.7.1 Finger
Not Available
Not Available
1.7.2 Ring Metal
Not Available
Not Available
1.8 Energy
Not Available
Not Available
1.9 Deities
Not Available
Not Available
1.10 Not to wear with
Not Available
Not Available
1.11 Powers
Not Available
Not Available
1.12 Birthstone
1.12.1 Planetary
Not Available
Not Available
1.12.2 Talisman
Not Available
Not Available
2 Physical Properties
2.1 Tenacity
Not Available
Flexible
2.2 Solubility
Not Available
Not Available
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
2.55-2.654.6-4.76
Amber
1 7.18
2.5 Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
2.6 Cleavage
[1010] Poor
Perfect on {0001}
2.7 Mohs Hardness
5-6Not Available
Amber
2 10
2.8 Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references
3 Optical Properties
3.1 Luster
Vitreous, Greasy
Resinous
3.2 Pleochroism
Not Available
Marked
3.3 Dispersion
NANA
Fluorite
0.007 1
3.4 Transparency
Transparent, Translucent
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
3.5 Refractive Index
1.529-1.5471.45-2.62
Agate Opal
1 3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
Hexagonal
Hexagonal
3.8 Birefringence
0.003-0.004Not Available
Achroite
0 0.296
3.9 Clarity
Transparent
OpaqueAnthony et al
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
Not Available
4.1.2 Cardiovascular
Not Available
Not Available
4.1.3 Respiratory
Not Available
Not Available
4.1.4 Reproductive
Not Available
Not Available
4.1.5 Digestive
Not Available
Not Available
4.2 Psychology
Not Available
Not Available
4.3 Healing
Not Available
Not Available
4.4 Qualities Associated
Not Available
Not Available

Nepheline Vs Covellite Fracture

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

Nepheline Vs Covellite Luster

A primary knowledge about Nepheline vs Covellite 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. Nepheline exhibits Greasy and Vitreous luster. Covellite, on other hand, exhibits Resinous luster.