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.

In a fossil-rich pocket of northern New South Wales, two pioneering palaeontologists have spent decades digging up rare ...

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 to common opal, which is usually one ...

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.

Rain in the outback South Australian town of Andamooka usually comes with the promise of rare opals washing up — prompting locals to walk the streets with buckets, in search of newly unveiled ...

A rare black leopard which had got caught to a snare in Mavuldeniya, Deniyaya has died an agonizing death. The carcass of the black leopard (melanistic form) was brought to the Elephant Transit Home ...

An extremely rare dolphin has been spotted off the eastern coast of Australia. The black and white marine mammal, which has been named Speckles by researchers, was seen swimming with a group of ...

A rare black fox has been seen roaming towns in a Welsh county, with locals urged to help catch it. Also known as silver foxes, they are not native to the wild in the UK, but domesticated and kept ...

It was these drawbacks that led Stuart Semple to create his own incredibly black paint ... “The 3.0 would occasionally separate and on rare occasions collect little salt crystals at the surface ...

The black fox has been spotted by locals who said they saw it "having a scratch" and wandering off when he had "had his grub" A rare black fox which has been roaming the streets of a Vale of ...

High above her, clinging to a nearby tree, was an all-black squirrel. Mostly concealed behind leaves, the shadowy, bushy-tailed rodent was reportedly camera-shy, scurrying away after noticing ...