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. After investing tens of thousands of ...

The equipment needed to mine and cost to register your claim can be extremely expensive, between $100,000 and $150,000, but there's no guarantee that miners will find black opal. Once rough opal ...

Mr Stutley and Mr Saunders are mining a patch of land 15 miles north of the South Australian town of Coober Pedy, which is known as "the opal capital of the world". South Australia supplies 80% of ...