When it comes to choosing the best pick among Gems Found In Australia gemstones, Wood Opal is known to be a popular choice!Physical properties of Wood Opal include its hardness, gravity, fracture, cleavage, etc. For any gemstone crystal, Wood 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. Wood Opal cleavage is nothing but the plane across which the crystal splits during cutting. and specific gravity of Wood Opal is 1.98-2.50.
The physical properties of Wood 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. Chemical composition of Wood Opal is represented by SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001).