Beryllonite and Verdelite Physical Properties
Specific Gravity
2.79-2.87
2.90-3.40
Fracture
Conchoidal
Conchoidal
Cleavage
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
Indiscernible
Mohs Hardness
5.5-6
7-7.5
Chemical Composition
NaBePO 4Michael 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.
Beryllonite and Verdelite Chemical Formula
While comparing Beryllonite and Verdelite 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 Beryllonite and Verdelite chemical formula.
- Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Verdelite- 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.
Beryllonite and Verdelite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Beryllonite and Verdelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Beryllonite and Verdelite Optical Properties during the identification of gemstone. Specific gravity of Beryllonite is 2.90-3.40 whereas that of Verdelite is 2.90-3.40.