Grandeur Diamonds

Lab-grown diamond jewellery with personalised service in London and Manchester

Grandeur Diamonds is a British jewellery brand focused on creating pieces with lab-grown diamonds. Its work combines a catalogue of its own designs with a bespoke commissioning service, aimed at engagement rings, wedding bands and fine jewellery. The company operates under the trading name Grandeur Diamonds, owned by GD Jewellers Ltd.

Engagement rings and wedding bands

The catalogue is organised into several main lines. In engagement rings, the solitaire and halo styles stand out, presented as timeless designs made to last a lifetime. The wedding band collection includes modern styles and elegant bands for different combinations, with a dedicated men's section. The brand also offers the Grandeur Signature Collection, a selection of engagement designs hand-picked and refined through bespoke craftsmanship.

Bespoke service: from idea to final piece

The bespoke service is structured in three stages. In the first, the client shares their vision and receives a personalised quote. Then the details are confirmed: choice of diamond and setting, and approval of the CAD design before manufacturing begins. The third stage covers manufacturing, checking and delivery of the piece. The company presents this process as continuous support from the first sketch to the final result.

Appointment-only showrooms

Educational content about diamonds

The brand publishes practical guides to help with choosing the stone. Topics covered include what lab-grown diamonds are and how they compare, the four Cs of quality (cut, colour, clarity and carat) and the meaning of certification and grading. These guides are presented as supporting material to help you decide with confidence before selecting a gemstone.

Company information

Grandeur Diamonds is a trading name of GD Jewellers Ltd, with company number 13094036 and VAT number GB 474 3271 85. Its registered office is at Sierra Quebec Bravo, 8th Floor, 77 Marsh Wall, London, England, E14 9SH.

Locations and premises

London location: Sierra Quebec Bravo, 8th Floor, 77 Marsh Wall, London, E14 9SH

Manchester location: Suite 411, Piccadilly House, 49 Piccadilly, Manchester, M1 2AP