Vivianite Vs Cassiterite
Origin
Southern and central Africa
Sri Lanka
Color
Blue, Green, Colorless
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Green, gray
Streak
White
White, Brownish
Specific Gravity
2.64-2.70
6.86-7.03
Fracture
-
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
{010} Perfect
{100} imperfect, {110} indistinct; partings on {111} or {011}
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Pearly
Adamantine, Greasy
Pleochroism
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael OâDonoghue
Pleochroic haloes have been observed. Dichroic in yellow
Transparency
Transparent
Transparent, Translucent
Refractive Index
1.560-1.640
1.990-2.105
Crystal System
-
tetragonal
Birefringence
0.054-0.075
0.096-0.098
Clarity
Transparent
Transparent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Healing
Emotional healing
Emotional healing
Qualities Associated
Transformation
Manifestation
Vivianite Vs Cassiterite Fracture
Fracture is an important parameter when you compare Vivianite and Cassiterite Physical Properties. It is necessary to understand the significance of these properties, before you compare Vivianite Vs Cassiterite 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. Cassiterite fracture is Subconchoidal, Uneven, Conchoidal and Irregular.
Vivianite Vs Cassiterite Luster
A primary knowledge about Vivianite vs Cassiterite 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. Vivianite exhibits Vitreous and Pearly luster. Cassiterite, on other hand, exhibits Adamantine and Greasy luster.