Looking to impress your guests with a visually striking cocktail? The Black Opal Drink is a vibrant blue creation that combines vodka, gin, rum, and a medley of flavors for a bold and refreshing ...
Following is a transcript of the video. Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. But mining black opal isn't easy.