This product is a 2-piece lot of Australian Bicolor Sapphire gemstones in an octagon shape, measuring 3x5mm each. The gemstones are transparent with a bi-color/multicolor appearance, and they have a very good cut grade. They are natural and unheated/untreated, with a vintage quality. The gemstones are sourced from Australia and have an asterism effect. Wholesale pricing is available, and they are certified as per requirement. Perfect for jewelry making and adding a unique touch to any design.