Sapphires are a precious variety of the mineral corundum, renowned for their hardness and brilliance. While most famous for their deep blue color, sapphires come in nearly every hue—except red, which is classified as ruby. They are found in several regions around the world, including Sri Lanka, Madagascar, and the United States, but Australia is one of the major sources of sapphires, particularly known for its unique and striking colors.

Australian sapphires, primarily mined in Queensland and New South Wales, are especially valued for their deep blue to greenish-blue tones, often with distinctive inky or teal overtones. Many also display natural color zoning or parti-coloration—a mix of blue, yellow, and green in one stone—making them a favorite among collectors and those seeking something unique. Mined sustainably and ethically in many regions, Australian sapphires are gaining renewed popularity for their beauty and traceable origins.