Chrysoberyl and Pargasite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.69-3.81
3.04-3.26
Fracture
Uneven, Conchoidal to uneven, Brittle, Metallic, Uneven, ConchoidalWalter Schumann, Brittle, Metallic
Splintery, Brittle, Uneven
Cleavage
Distinct on {110}, imperfect on {010}, poor on {001}
{110} perfect
Chemical Composition
BeAl 2 O 4
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chrysoberyl and Pargasite Chemical Formula
While comparing Chrysoberyl and Pargasite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Chrysoberyl and Pargasite chemical formula.
- Chemical formula of Chrysoberyl- BeAl 2 O 4
- Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chrysoberyl and Pargasite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chrysoberyl and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrysoberyl and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Chrysoberyl is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.