Beryllonite and Riebeckite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.79-2.87
  
3.28-3.44
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Uneven, Splintery, Brittle
  
Cleavage
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
  
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
  
Mohs Hardness
5.5-6
  
5.0-6.0
  
Chemical Composition
NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Not Available
  
Beryllonite and Riebeckite Chemical Formula
While comparing Beryllonite and Riebeckite 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 Riebeckite chemical formula.
- Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
>
Beryllonite and Riebeckite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Beryllonite and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Beryllonite and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Beryllonite is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.