Sillimanite Vs Beryllonite
Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
USA
Color
Blue, Green, Brownish, Greenish, Colorless, gray
Colorless, Colorless, White, Yellow
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
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
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
2.79-2.87
Fracture
Splintery
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
{010} perfect
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
Mohs Hardness
6-7.5
5.5-6
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Subadamantine, Silky
Vitreous, Adamantine, Pearly
Pleochroism
Colourless to pale brown to yellow
AbsentWalter Schumann
Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
Refractive Index
1.653-1.685
1.552-1.562
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
monoclinic
Birefringence
0.020-0.022
0.009
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
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
Sillimanite Vs Beryllonite Fracture
Fracture is an important parameter when you compare Sillimanite and Beryllonite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Beryllonite 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 Sillimanite is Splintery. Beryllonite fracture is Brittle, Conchoidal, Conchoidal, ConchoidalArthur Thomas and Gemstones (2009).
Sillimanite Vs Beryllonite Luster
A primary knowledge about Sillimanite vs Beryllonite 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. Sillimanite exhibits Silky, Subadamantine and Vitreous luster. Beryllonite, on other hand, exhibits Adamantine, Pearly and Vitreous luster.