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.

Natural pearls are harder to find ... The shinier the pearl, the better. Black opal is one of the rarest gemstones in the world, sought after for its seemingly infinite display of colors, compared ...

Looking to impress your guests with a visually striking cocktail? The Black Opal Drink is a vibrant blue creation that ...