Chrysoberyl and Lazurite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.69-3.81
  
2.75
  
Fracture
Uneven, Conchoidal to uneven, Brittle, Metallic, Uneven, ConchoidalWalter Schumann, Brittle, Metallic
  
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Cleavage
Distinct on {110}, imperfect on {010}, poor on {001}
  
Imperfect on {110}
  
Mohs Hardness
8.5
  
5.5
  
Chemical Composition
BeAl 2 O 4
  
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
  
Chrysoberyl and Lazurite Chemical Formula
While comparing Chrysoberyl and Lazurite 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 Lazurite chemical formula.
- Chemical formula of Chrysoberyl- BeAl 2 O 4
- Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Chrysoberyl and Lazurite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chrysoberyl and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrysoberyl and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Chrysoberyl is 2.75 whereas that of Lazurite is 2.75.