When it comes to choosing the best pick among Red Gemstones gemstones, Almandine is known to be a popular choice!Physical properties of Almandine include its hardness, gravity, fracture, cleavage, etc. For any gemstone crystal, Almandine 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. Almandine cleavage is nothing but the plane across which the crystal splits during cutting. Almandine cleavage is none,and specific gravity of Almandine is 3.95-4.30.
The physical properties of Almandine, 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 Almandine is represented by Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009).