The God of Wine poured the juice of his grapes over the white crystal, giving it the purple hue that people have come to love. As is the case with many stones, an amethyst's value is determined by ...

The three-meter tall amethyst geode - a hollow rock filled with amethyst crystals - is the main attraction at the Crystal Caves at Atherton, southwest of Cairns. But it's now missing a bit after a ...