When it comes to choosing the best pick among Blue Gemstones gemstones, Star Ruby is known to be a popular choice!Physical properties of Star Ruby include its hardness, gravity, fracture, cleavage, etc. For any gemstone crystal, Star Ruby 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. Star Ruby cleavage is nothing but the plane across which the crystal splits during cutting. and specific gravity of Star Ruby is 3.95-4.10.
The physical properties of Star Ruby, 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 Star Ruby is represented by Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006).