Zoisite Vs Covellite
Origin
Pakistan, Tanzania
Mexico
Color
Brown, gray, Green, Blue, rose, Red
Blue, Black
Streak
White, Colorless
Grey, Black, gray
Specific Gravity
3.20-3.50
4.6-4.76
Fracture
Uneven, Conchoidal, Even
-
Cleavage
Perfect {010} imperfect {100}
Perfect on {0001}
Chemical Composition
Ca2Al3(SiO4)3(OH)
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Pleochroism
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green
Marked
Transparency
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.
OpaqueAnthony et al
Refractive Index
1.685-1.707
1.45-2.62
Crystal System
Orthorhombic
Hexagonal
Birefringence
0.006-0.018
-9999
Clarity
Transparent
OpaqueAnthony et al
Neurological
-
Enhances mental clarity and focus
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Excellent
Good
Reproductive
Supports reproductive health
-
Psychology
Transformation
Transformation
Healing
Emotional healing
Emotional healing
Qualities Associated
-
Manifestation
Zoisite Vs Covellite Fracture
Fracture is an important parameter when you compare Zoisite and Covellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Zoisite 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 Zoisite is Uneven, Conchoidal and Even.
Zoisite Vs Covellite Luster
A primary knowledge about Zoisite 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. Zoisite exhibits Vitreous luster. Covellite, on other hand, exhibits Resinous luster.