Common Opal Vs Cassiterite
Origin
Southern and central Africa
Sri Lanka
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Green, gray
Streak
Not Available
White, Brownish
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
Energy
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Not Available
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Brittle
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
1.98-2.50
6.86-7.03
Fracture
Conchoidal, Gemstones of the world (2001)
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
Cleavage
Not Available
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
5.5-6.5
6-7
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Not Available
Adamantine, Greasy
Pleochroism
AbsentWalter Schumann
Pleochroic haloes have been observed. Dichroic in yellow
Transparency
Translucent
Transparent, Translucent
Refractive Index
1.37-1.52
1.990-2.105
Optic Character
Not Available
Not Available
Crystal System
Not Available
tetragonal
Birefringence
Not Available
0.096-0.098
Clarity
Translucent
Transparent
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
Common Opal Vs Cassiterite Fracture
Fracture is an important parameter when you compare Common Opal and Cassiterite Physical Properties. It is necessary to understand the significance of these properties, before you compare Common 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 Common Opal is Conchoidal and Gemstones of the world (2001). Cassiterite fracture is Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009) and Irregular.
Common Opal Vs Cassiterite Luster
A primary knowledge about Common 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. Cassiterite, on other hand, exhibits Adamantine and Greasy luster.