When it comes to choosing the best pick among Green Gemstones gemstones, Sphalerite is known to be a popular choice!Physical properties of Sphalerite include its hardness, gravity, fracture, cleavage, etc. For any gemstone crystal, Sphalerite 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. Sphalerite cleavage is nothing but the plane across which the crystal splits during cutting. Sphalerite cleavage is Perfect, Perfect, Perfect,and specific gravity of Sphalerite is 3.95-4.10.
The physical properties of Sphalerite, 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 Sphalerite is represented by (Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references.