Gypsum and Lazurite Physical Properties
Tenacity
Flexible
Brittle
Solubility
Soluble
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.20-2.40
2.75
Fracture
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Perfect on {010}, distinct on {100}
Imperfect on {110}
Chemical Composition
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Gypsum and Lazurite Chemical Formula
While comparing Gypsum 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 Gypsum and Lazurite chemical formula.
- Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
- Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Gypsum and Lazurite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gypsum and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gypsum and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Gypsum is 2.75 whereas that of Lazurite is 2.75.