Tanzanite Vs Covellite
Origin
Tanzania, Yellow, green, Yellow, green
Mexico
Color
Blue
Blue, Blue, Black
Streak
White, Colorless
Grey, Black, gray
For which Rashi?
Sagittarius, Pisces, Virgo, Sagittarius, Pisces, Virgo, Sagittarius, Pisces, Virgo
Not Available
Planet
Not Available
Not Available
Element of Planets
Air, Water, Earth
Not Available
Energy
Receptive, Projective
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Goddess
Not Available
Not to wear with
Not Available
Not Available
Powers
Love, Healing
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Flexible
Solubility
Not Available
Not Available
Durability
Hard
Not Available
Specific Gravity
3.35
4.6-4.76
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Cleavage
Perfect {010}, imperfect {100}
Perfect on {0001}
Mohs Hardness
6.5-7
Not Available
Chemical Composition
Ca2Al3(SiO4)3(OH)
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Pleochroism
Present
Marked
Transparency
Transparent, Translucent, Transparent to translucent
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
Refractive Index
1.685-1.707
1.45-2.62
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Hexagonal
Birefringence
0.006-0.018
Not Available
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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
Tanzanite Vs Covellite Fracture
Fracture is an important parameter when you compare Tanzanite and Covellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Tanzanite 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 Tanzanite is Uneven, Conchoidal, UnevenWalter Schumann and Gemstones of the world (2001). Covellite fracture is Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle and Metallic.
Tanzanite Vs Covellite Luster
A primary knowledge about Tanzanite 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. Tanzanite exhibits Vitreous luster. Covellite, on other hand, exhibits Resinous luster.
