When it comes to choosing the best pick among Precious Gemstones gemstones, Ruby is known to be a popular choice!Physical properties of Ruby include its hardness, gravity, fracture, cleavage, etc. For any gemstone crystal, 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. Ruby cleavage is nothing but the plane across which the crystal splits during cutting. Ruby cleavage is No true cleavage,and specific gravity of Ruby is 3.97-4.05.
The physical properties of 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 Ruby is represented by Al 2 O 3.