black opal Directory References Discover 10 Great Sports Rivalries The Seven Sacraments of the Roman Catholic church 10 Failed Doomsday Predictions 7 Unique Burial Rituals Across the World How Deadly Is Quicksand? Nostradamus and His Prophecies 7 Deadliest Weapons in History Contents black opal mineral Ask the Chatbot a Question Ask the Chatbot a Question Learn about this topic in these articles:characteristics In opalBlack opal, with a very dark gray or blue to black body colour, is particularly rare and highly prized. White opal, with light body colours, and fire opal, characterized by yellow, orange, or red body colour, are much more common. Read More
