Common Opal Specifications
Common Opal Specifications include its chemical, physical and optical properties of natural gemstones. These are displayed through measurements of light dispersion, hardness, density or specific gravity, cleavage, fracture, tenacity, refractive index and luster. These properties vary depending on the type of natural gemstone. Here, to give you a basic insight about Common Opal, we provide you with a few prominent Common Opal facts.
The gem is commonly found in Southern and central Africa.Chemical formula is majorly responsible in contributing the Physical Properties of Common Opal. It is mainly composed of SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001).