Clinozoisite and Lazurite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.21-3.38
  
2.75
  
Fracture
Irregular/uneven, Uneven
  
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Cleavage
Perfect on {001}
  
Imperfect on {110}
  
Mohs Hardness
6-7
  
5.5
  
Chemical Composition
Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references
  
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
  
Clinozoisite and Lazurite Chemical Formula
While comparing Clinozoisite 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 Clinozoisite and Lazurite chemical formula.
- Chemical formula of Clinozoisite- Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Clinozoisite and Lazurite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Clinozoisite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Clinozoisite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Clinozoisite is 2.75 whereas that of Lazurite is 2.75.