When it comes to choosing the best pick among Green Gemstones gemstones, Kornerupine is known to be a popular choice!Physical properties of Kornerupine include its hardness, gravity, fracture, cleavage, etc. For any gemstone crystal, Kornerupine 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. Kornerupine cleavage is nothing but the plane across which the crystal splits during cutting. Kornerupine cleavage is Good on ,and specific gravity of Kornerupine is 3.25-3.45.
The physical properties of Kornerupine, 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 Kornerupine is represented by Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references.