Origin
Sri Lanka
Afghanistan, Brazil, Madagascar, Mozambique, Southern and central Africa, Russia, Sri Lanka
Color
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Green, gray
White, Colorless, Blue, Red, Green, Yellow, Violet
Specific Gravity
6.86-7.03
3.01-3.06
Fracture
Subconchoidal, Uneven, Conchoidal, Irregular
Conchoidal
Cleavage
{100} imperfect, {110} indistinct; partings on {111} or {011}
Indiscernible
Chemical Composition
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Luster
Adamantine, Greasy
-
Pleochroism
Pleochroic haloes have been observed. Dichroic in yellow
Strong: dark red pinkish-redHerve Nicolas Lazzarelli
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.990-2.105
1.614-1.666
Crystal System
tetragonal
-
Birefringence
0.096-0.098
0.014-0.040
Clarity
Transparent
Transparent
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
-
Respiratory
Poor
Excellent
Healing
Emotional healing
Emotional healing
Qualities Associated
Manifestation
Passion
Cassiterite Vs Rubellite Fracture
Fracture is an important parameter when you compare Cassiterite and Rubellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Cassiterite Vs Rubellite 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 Cassiterite is Subconchoidal, Uneven, Conchoidal and Irregular. Rubellite fracture is Conchoidal.
Cassiterite Vs Rubellite Luster
A primary knowledge about Cassiterite vs Rubellite 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 exhibits Adamantine and Greasy luster.