Zoisite and Lazurite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.20-3.50
2.75
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Even
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Perfect {010} imperfect {100}
Imperfect on {110}
Chemical Composition
Ca2Al3(SiO4)3(OH)
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Zoisite and Lazurite Chemical Formula
While comparing Zoisite 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 Zoisite and Lazurite chemical formula.
- Chemical formula of Zoisite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Zoisite and Lazurite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Zoisite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 2.75 whereas that of Lazurite is 2.75.