Other fossils include: turtles, crocodiles, fish, birds, early mammals, mussels, snails, giant marine reptiles, pine cones, plant stems and seeds. The Australian Opal Centre has 4000 or more fossils ...

The two men are standing in the middle of the sun-bleached South Australian outback, hunting for opals, the rare gemstones that can sparkle with a rainbow of different colours. They sift through ...