A cool fact about white opals, that is often overshadowed by their beautiful play-of-color, is their ancient history. Opal fossils are evidence of this stone’s journey through time. In Coober Pedy, South Australia, opalised remains of dinosaurs and marine creatures from the Cretaceous period (over 100 million years ago) have been discovered. These fossils, rather than being composed of bone, are formed by opal, which has replaced the original material over millennia. Finding an opal that is also a fossil—is a remarkable glimpse into the geological past, with the added thrill of the opal’s kaleidoscopic beauty.
