Star Diamond is a Mayfair private jewellery house creating bespoke and one-of-a-kind jewels with rare diamonds and precious stones. Established in 1948, the brand draws on six decades of relationships with influential diamond suppliers and combines heritage with contemporary design. Its appointment-only setting is described as discreet, luxurious and welcoming, where clients can receive expert guidance on jewellery and diamond purchases.

The collection includes fine jewellery, rare and loose diamonds, and the Astraeus collection, featuring coloured diamonds arranged in designs inspired by shooting stars. Other collections include Constellation, Classic, Deco, Ivy, Paramount, Rainbow and Solar. Star Diamond also offers tailored design, giving clients access to design talent, gemstones and diamonds to create a personalised jewel. Its craftsmanship brings exceptional diamonds to the fore in modern heritage pieces intended to endure. The house presents its work as a journey from sourcing diamonds to transforming rough stones into finished creations, and invites clients to explore its collections and arrange an appointment.