Wood Opalite, from Indonesia and the USA, is soft, organic shades of off-white and browns. Wood Opalite is a petrified wood, and a member of the quartz family. This is wood turned to stone - petrified (from the Greek petro - meaning rock or stone.) AKA Fossilized wood, agatized wood, petrified wood. <p> </p>Mohs hardness 6.5 - 7.