Hancocks London acquires rare Inchiquin emerald jewel with royal provenance

Hancocks London has acquired a jewel that sits at the meeting point of scarcity, craftsmanship and proof: the circa-1890 Inchiquin Emerald, a convertible emerald-and-diamond piece with royal Irish provenance and a gemological dossier that makes it far more than a handsome antique. In a market that prizes named objects with a clear lineage, the sale underscores why documented heritage jewels continue to command attention from serious buyers.

At the center is a 5.67-carat antique Colombian emerald set in yellow-gold claws, a detail that matters because the mounting is not only decorative but protective, letting the color of the stone stay dominant while giving the gem a refined, period-correct frame. The emerald is encircled by approximately 10.50 carats of old-cut diamonds, including twelve old mine-cut stones and eight larger old European-cut diamonds. That mix of cuts gives the jewel the softer, candlelit brilliance collectors expect from late-19th-century work, rather than the sharper flash of modern calibrations. It also converts, allowing the piece to be worn as either a pendant or a bangle, a versatility that remains unusually desirable in antique jewelry because it turns a historic object into something genuinely usable.

The Inchiquin name carries the weight of the O’Brien family line, descended from Brian Boru, the 11th-century High King of Ireland. The family’s title, Baron Inchiquin, was created in 1543 for Murrough O’Brien, Prince of Thomond, and the dynasty held the jewel for more than a century. Lucius William O’Brien later inherited the title of 15th Baron Inchiquin in 1900, keeping the jewel tied to one of Ireland’s most storied noble lines. That kind of traceable aristocratic ownership gives the piece a narrative that is difficult to replicate and almost impossible to manufacture.

Guy Burton, managing director of Hancocks London, said the Inchiquin Emerald belongs to an “exceptionally small group” of named heritage jewels available today. The stone’s SSEF Appendix letter, which identifies it as an “Exceptional Emerald,” adds a second layer of confidence: not just family history, but independent gemological distinction. Hancocks, founded in 1849 and dedicated to fine jewellery for more than 170 years, is currently displaying the jewel in St James’s, with price available on application. For collectors, the appeal lies in the rare combination of wearable design, verifiable provenance and a stone whose importance is backed by both history and science.