Australian Diamond Brokers is a family-owned Sydney jeweller specialising in diamonds, bespoke engagement rings and custom luxury jewellery since 1977. The company combines diamond brokerage and wholesale expertise with hand-crafted designs, serving customers online and from its store at 70 Castlereagh Street. Its range includes natural and lab-grown diamonds, wedding rings, men’s and ladies’ rings, and engagement styles such as solitaire, halo, trilogy and diamond-band designs. Customers can also explore pink diamonds, including Argyle selections, fancy yellow diamonds, and gemstone jewellery featuring sapphires, rubies, emeralds and aquamarines. Other offerings include earrings, bracelets, charms, necklaces, pendants and signet rings.

Australian Diamond Brokers provides appointments, custom design and diamond-search assistance to help customers select a stone and create a ring. The company says natural diamonds come with independent grading reports from recognised laboratories such as GIA, while its lab-grown diamonds are generally IGI certified. Its stated commitments include conflict-free diamonds and experienced master jewellers. Rings are commonly crafted in platinum, with gold options available by request.