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Demantoid
Demantoid

Covellite
Covellite



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Demantoid
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Demantoid Vs Covellite

1 Astrology
1.1 Origin
Italy
Mexico
1.2 Color
Green
Blue, Blue, Black
1.3 Streak
Not Available
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
3.77-3.95
4.6-4.76
2.5 Fracture
Not Available
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
2.6 Cleavage
Not Available
Perfect on {0001}
2.7 Mohs Hardness
6.5
Not Available
2.8 Chemical Composition
Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.
CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references
3 Optical Properties
3.1 Luster
Adamantine
Resinous
3.2 Pleochroism
None
Marked
3.3 Dispersion
Albite
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite
ADD ⊕
3.4 Transparency
Gemmological Tables (2004)
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
3.5 Refractive Index
1.880-1.890
1.45-2.62
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
cubic
Hexagonal
3.8 Birefringence
Not Available
Not Available
3.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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

Demantoid Vs Covellite Fracture

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

Demantoid Vs Covellite Luster

A primary knowledge about Demantoid 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. Demantoid exhibits Adamantine luster. Covellite, on other hand, exhibits Resinous luster.