Australian opal fields

Australian opal fields are regions within Australia where natural opals are mined. These areas, like Lightning Ridge, Coober Pedy, and Andamooka, contain rich deposits of opal, a gemstone valued for its vibrant play-of-color. Opal forms in sedimentary beds from silica-rich solutions that solidify over millions of years. The fields often involve extensive underground mining or open-cut operations. Australia's opal fields are globally significant, producing high-quality, diverse varieties of opal, including black, white, and boulder opals, making the country a premier source for this distinctive gemstone.