Beautifully Made

Welcome

Founded in 2007 by Mary Walsh, W4Diamonds is a private London jeweller offering a truly personal service.

Mary’s love of fine jewellery began during her decade with De Beers, where she gained a deep understanding of diamonds and the craftsmanship behind them. She founded W4Diamonds to offer a more relaxed and enjoyable way to buy jewellery — one where clients feel informed, inspired, and involved in the creative process.

Whether you’re dreaming of a bespoke design, looking to remodel a cherished piece, or need something special from our ready-to-wear collection, Mary will guide you every step of the way — from initial ideas to the final sparkle.

All pieces are handcrafted in London using ethically sourced diamonds and gemstones in full compliance with the Kimberley Process.