When it comes to choosing the best pick among gemstones, Milk Opal is known to be a popular choice!Physical properties of Milk Opal include its hardness, gravity, fracture, cleavage, etc. For any gemstone crystal, Milk Opal 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. Milk Opal cleavage is nothing but the plane across which the crystal splits during cutting. and specific gravity of Milk Opal is 1.98-2.50.
The physical properties of Milk Opal, 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.