Johnston Opals is one of the renowned firms that has one of the largest selections of black opals and its necklaces in Australia since 1901. With so many decades of experience with us, we have acquired an impeccable reputation for our quality and workmanship. Check out our comprehensive range of doublet opals, white and golden south sea pearls or opal pendants, opal necklaces and other pieces of jewellery. To know more, contact our representatives on: 1300 123 456