Onyx Vs Covellite
Origin
Not Available
Mexico
Color
White
Blue, Blue, Black
Streak
Not Available
Grey, Black, gray
For which Rashi?
Capricorn
Not Available
Planet
Saturn
Not Available
Element of Planets
Not Available
Not Available
Energy
Projective
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Mars
Not Available
Not to wear with
Not Available
Not Available
Powers
Protection
Not Available
Planetary
Not Available
Not Available
Talisman
Capricorn
Not Available
Tenacity
Not Available
Flexible
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.70
4.6-4.76
Fracture
Not Available
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Cleavage
Indiscernible
Perfect on {0001}
Mohs Hardness
6.5-7
Not Available
Chemical Composition
SiO2
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Pleochroism
Not Available
Marked
Dispersion
Not Available
Not Available
Transparency
Translucent, Opaque, Translucent to opaque
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
Refractive Index
1.530-1.543
1.45-2.62
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Hexagonal
Birefringence
Not Available
Not Available
Clarity
OpaqueHerve Nicolas Lazzarelli
OpaqueAnthony et al
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
Onyx Vs Covellite Fracture
Fracture is an important parameter when you compare Onyx and Covellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Onyx 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 Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle and Metallic.
Onyx Vs Covellite Luster
A primary knowledge about Onyx 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. Onyx exhibits Vitreous luster. Covellite, on other hand, exhibits Resinous luster.
