Hand crafted in Queensland for over 40 years, the Australian Heritage Jewellery Collection is hand crafted using the finest gemstones & natural brilliant cut diamonds, free from any enhancements or treatments. The pure metal content (375) is clearly marked on each ring band along with the Makers Mark of the Sun and the Kangaroo Head mark of the prestigious Gold and Silversmiths Guild of Australia. Each comes with a written guarantee card - backed by the makers who believe Australian sourced materials and workmanship are so superior they guarantee if for 25 years