Crafted in our London atelier by artisans with over a century of combined expertise, this cushion-shaped sardonyx signet ring combines the classic cushion signet form with the striking two-tone character of natural sardonyx. Each ring is meticulously handmade from premium gold stampings, ensuring uncompromising quality.

This sardonyx features a deep blue upper layer over a rich red base — a combination that makes it particularly well suited to engraving. When the stone is engraved, the red layer beneath is revealed, creating a vivid contrast between the design and the stone's surface. At 15 x 12mm, this is our largest sardonyx cushion — a generously proportioned face that lends itself beautifully to a bold or detailed engraving.

• Stone size: 15 x 12mm (allow an additional 1.5–2mm for the ring edge)
• Stone: Natural sardonyx
• Metals available: 9ct & 18ct yellow, white, and rose gold
• Made to order in our London workshop
• Includes: Certificate, valuation, and presentation box

Not sure where to start? Learn about our bespoke process — from initial consultation to collection, we guide you every step of the way.