Opal Vs Cassiterite
Origin
Ethiopia
Sri Lanka
Color
Yellow, White, Red, Brown, Blue
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Green, gray
Streak
White
White, Brownish
For which Rashi?
Cancer, Libra, Scorpio
-
Element of Planets
Earth, Air, Water
-
Powers
Astral Projection, Psychicism
-
Tenacity
BrittleWalter Schumann
Brittle
Solubility
hot salt water
insoluble
Specific Gravity
1.98-2.25
6.86-7.03
Fracture
Conchoidal
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
None
{100} imperfect, {110} indistinct; partings on {111} or {011}
Chemical Composition
SiO2 · nH2O
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Pearly
Adamantine, Greasy
Pleochroism
None
Pleochroic haloes have been observed. Dichroic in yellow
Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Translucent
Refractive Index
1.37-1.52
1.990-2.105
Crystal System
Trigonal
tetragonal
Birefringence
-9999
0.096-0.098
Clarity
Transparent
Transparent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Psychology
Creativity
Focus
Healing
Emotional healing
Emotional healing
Qualities Associated
Creativity
Manifestation
Opal Vs Cassiterite Fracture
Fracture is an important parameter when you compare Opal and Cassiterite Physical Properties. It is necessary to understand the significance of these properties, before you compare Opal 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. Fracture observed in Opal is Conchoidal. Cassiterite fracture is Subconchoidal, Uneven, Conchoidal and Irregular.
Opal Vs Cassiterite Luster
A primary knowledge about Opal 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. Opal exhibits Vitreous and Pearly luster. Cassiterite, on other hand, exhibits Adamantine and Greasy luster.