When it comes to choosing the best pick among Colorless Gems gemstones, Colemanite is known to be a popular choice!Physical properties of Colemanite include its hardness, gravity, fracture, cleavage, etc. For any gemstone crystal, Colemanite 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. Colemanite cleavage is nothing but the plane across which the crystal splits during cutting. Colemanite cleavage is Perfect, Distinct,and specific gravity of Colemanite is 2.40-2.42.
The physical properties of Colemanite, 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 Colemanite is represented by Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references.