When it comes to choosing the best pick among Blue Gemstones gemstones, Lazurite is known to be a popular choice!Physical properties of Lazurite include its hardness, gravity, fracture, cleavage, etc. For any gemstone crystal, Lazurite Optical Properties are responsible for imparting various physical properties to its structure. Knowledge of these properties is equally important to gem-cutters as well as to consumers. Lazurite cleavage is nothing but the plane across which the crystal splits during cutting. Lazurite cleavage is Imperfect on ,and specific gravity of Lazurite is 2.75.
The physical properties of Lazurite, in fact, are imparted by the chemical composition of its individual molecule. The reactivity or inertness of the crystal is solely governed by its chemical structure. Chemical composition of Lazurite is represented by (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C..