Opals are also Australia's national gemstone and form an important part of the gemstone mining industry in central Queensland. Boulder opals are unique to western Queensland. ( ABC Rural: Melanie ...

Don't miss out on the headlines from Sunshine Coast. Followed categories will be added to My News. Through Boulder Opal Mines Australia, John Doyle and Leanne Smedley are continuing to bring what ...

Each region produces a different type of stone: white or milky opal is found in South Australia, boulder opal in Queensland and black opal — the most valuable — in New South Wales (the state ...

The land is as dry as a bone but home to a gemstone found only in Queensland — the boulder opal. A gem the size of your fist can fetch prices of up to hundreds of thousands of dollars.

Anyone interested in securing a place on the 2025 Australian Opal Tour is encouraged to hurry, as places are limited and the application deadline is fast approaching.

The land is as dry as a bone but home to a gemstone found only in Queensland — the boulder opal. A gem the size of your fist can fetch prices of up to hundreds of thousands of dollars. "I'd be ...

In terms of polished stone, the Virgin Rainbow, a rare crystal opal that’s also owned by the South Australian Museum, is the world’s most expensive opal on a per gram basis, valued at $750,000 ...