Opal is a unique and fascinating gemstone that has been used in jewellery for millennia. With its distinctive play of colours and iridescence, opal jewellery is both beautiful and eye-catching. Opals definitely deserve a place in your jewellery collection, but what do you really know about them? In this article, we'll explore the history of opal jewellery, how opals are formed, and how to care for opal jewellery to ensure that it stays looking beautiful for years to come.