Altmann + Cherny is an Australian opal jewellery brand and Sydney-based specialist, serving customers since 1948. The company showcases authentic opals sourced from Australia, including black, boulder and white opals, and presents them in handcrafted jewellery designed to highlight each stone’s distinctive character. Its range includes rings, pendants, earrings, bracelets and necklaces, with pieces available to explore through its online shop and Sydney boutique.

Beyond jewellery, Altmann + Cherny offers information about opals and their history, helping customers learn more about these Australian gemstones. Visitors can also seek expert advice and discuss custom designs, making the brand a resource for both ready-to-wear pieces and more individual creations. The website features a lookbook and information on famous opals, alongside details about the company’s story, store and team. Combining Australian opal expertise with a long-standing presence in Sydney, Altmann + Cherny focuses on quality stones, considered craftsmanship and personal guidance for people interested in opal jewellery.