The most valuable variety is “precious opal,” which displays play-of-color: patches of pure spectral colors from violet to red flashing over the stone as it is tilted ... yellow to orange (as in fire ...

The extremely rare, 10-carat Mediterranean Blue diamond could fetch a whopping $20 million at Sotheby's High Jewelry auction ...

A callous fire attack has devastated several homeless people in the northern suburbs of Adelaide. Added8 days ago The pilot of a light plane has died in a crash in remote farmland in Western ...