Gemstones, including rubies, emeralds, and sapphires, can be sold for cash, much the same as diamonds and other jewelry. However, more often than not, those stones have very little resale value ...

Global demand for opals is soaring, pushing up prices of the gemstones. As the 40ft (12m) drill rattles down through the red dirt, miner Craig Stutley makes a statement that sounds a lot like what ...