Australian opal and sapphires cluster ring - one of a kind solid gold ring designNatural, unique Koroit boulder opal showing amazing blue, green, yellow and orange colours , as the light hits this opal from different angles you'll notice more and more colours. Three blue sapphires have been included in this design to enhance the scene. This ring features wonderful natural texture of tropical insects in its band Only one available Material: UK Hallmarked 18 ct solid yellow gold Gemstones: Natural Australian opal and Sapphires.