Verdelite Vs Cassiterite
Origin
Afghanistan, Brazil, Mozambique, Sri Lanka, USA
Sri Lanka
Color
Green, Brown
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Green, gray
Specific Gravity
2.90-3.40
6.86-7.03
Fracture
Conchoidal
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
Indiscernible
{100} imperfect, {110} indistinct; partings on {111} or {011}
Chemical Composition
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.
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
-
Adamantine, Greasy
Pleochroism
Strong: dark green yellow
Pleochroic haloes have been observed. Dichroic in yellow
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.614-1.666
1.990-2.105
Crystal System
-
tetragonal
Birefringence
0.014-0.040
0.096-0.098
Clarity
Transparent
Transparent
Neurological
-
Enhances mental clarity and focus
Cardiovascular
Supports heart health
Supports heart health
Psychology
Compassion
Focus
Healing
Emotional healing
Emotional healing
Qualities Associated
Compassion
Manifestation
Verdelite Vs Cassiterite Fracture
Fracture is an important parameter when you compare Verdelite and Cassiterite Physical Properties. It is necessary to understand the significance of these properties, before you compare Verdelite 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 Verdelite is Conchoidal. Cassiterite fracture is Subconchoidal, Uneven, Conchoidal and Irregular.
Verdelite Vs Cassiterite Luster
A primary knowledge about Verdelite 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.