black opal Directory References Discover Where Is “Old Zealand”? Causes of the Great Depression 7 of the World’s Most Dangerous Festivals 7 of the World’s Deadliest Shipwrecks The Seven Sacraments of the Roman Catholic church Cruel and Unusual Punishments: 15 Types of Torture 9 of the World’s Deadliest Snakes 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
