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 ...

The Gold Coast dad has now revealed the incredibly rare and lucrative discovery made inside one of the rocks — which recently ...

The Most Expensive Fire Opal in the World. The Fire of Australia is known as the finest uncut opal in existence and is worth $900,000 AUD, or roughly $679,000 USD.

Explore the world's most dazzling gemstone destinations, from Myanmar's ruby valleys to Sri Lanka's sapphire-rich lands.

An extensive and valuable opal collection considered the premier opal collection in the 1980s is up for auction and could be lost for the people of Australia. BRISBANE, QUEENSLAND, AUSTRALIA, June ...