Topaz and Beryllonite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.49-3.57
2.79-2.87
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
[001] Perfect
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
Chemical Composition
Al2SiO4(F,OH)2
NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Topaz and Beryllonite Chemical Formula
While comparing Topaz and Beryllonite 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 Topaz and Beryllonite chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Topaz and Beryllonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Beryllonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Beryllonite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.79-2.87 whereas that of Beryllonite is 2.79-2.87.