Covellite Vs Andalusite
Origin
Mexico
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
Color
Blue, Black
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Streak
Grey, Black, gray
White
Specific Gravity
4.6-4.76
3.05-3.21
Fracture
-
Uneven, Subconchoidal, Splintery
Cleavage
Perfect on {0001}
Good on {110}, poor on {100}
Chemical Composition
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Resinous
Vitreous, Greasy
Pleochroism
Marked
strongly trichroic
Transparency
OpaqueAnthony et al
Transparent, Translucent
Refractive Index
1.45-2.62
1.627-1.650
Crystal System
Hexagonal
Orthorhombic
Birefringence
-9999
0.009-0.010
Clarity
OpaqueAnthony et al
Transparent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Good
Excellent
Psychology
Transformation
Perception
Healing
Emotional healing
Physical healing
Qualities Associated
Manifestation
Self-Realization
Covellite Vs Andalusite Fracture
Fracture is an important parameter when you compare Covellite and Andalusite Physical Properties. It is necessary to understand the significance of these properties, before you compare Covellite Vs Andalusite 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. Andalusite fracture is Uneven, Subconchoidal and Splintery.
Covellite Vs Andalusite Luster
A primary knowledge about Covellite vs Andalusite 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. Andalusite, on other hand, exhibits Vitreous and Greasy luster.