Our collection of South Australian crystal opals and white opals as well as Queensland boulder opals (the famous Lightning Ridge black and white opals) is the largest in Australia.

Amid the hot, red dust of Coober Pedy in South Australia’s far north, opal pioneer John Rynes and son Mike Saj-Rynes discovered a love for Australia’s national gemstone.

At the Opal Diamond Factory, the Rynes family crafts jewellery, including bespoke pieces, from opals, ethically-sourced GIA certified diamonds and other precious stones.

We are proud to have been a part of thousands of stories, from love celebrations and special moments to the creation keepsakes and treasured presents. Collaboration with our customers is the core of what we do.

Passion and hard work are the key to our success. Whether we are cutting rough opals directly from the mine or creating elegant, custom jewellery in the design studio, we have achieved this.

To view our exclusive range or design your own custom piece, we invite you to visit our Adelaide showroom, or meet us via a virtual appointment.