Harriet Sperling’s understated diamond ring echoes Queen Elizabeth’s royal heirloom

Harriet Sperling’s engagement ring is less about sparkle than about lineage. Peter Phillips chose a Pragnell piece that quietly reaches back to Queen Elizabeth II’s own ring, turning a modern proposal into a small study in royal continuity.

The connection runs through Antrobus Ltd, the jeweler Pragnell says made Queen Elizabeth II’s engagement ring in 1946 from diamonds taken from an antique tiara once given to Prince Philip by Princess Alice of Battenberg. The same tiara also yielded a diamond bracelet that Queen Elizabeth wore on her wedding day, November 20, 1947, and later throughout her reign. Pragnell now owns Philip Antrobus Ltd, along with the archive and original design linked to the Queen’s ring.

That history is not dressed up as ornament for its own sake. Pragnell launched its Antrobus setting in 2016 to mark the 70th anniversary of the royal proposal, and the modern version keeps the language of the original: polished platinum, GIA-certified diamonds, an eight-claw setting and four diamonds set into the band. It is a restrained design, more archival than flashy, with the sort of proportions that read as inherited taste rather than spectacle.

The ring also fits Peter Phillips’ place in the royal family. He is Princess Anne’s eldest child, Prince William’s first cousin and 19th in line to the throne. HELLO! reported that Peter chose Harriet’s ring from Pragnell, the Mayfair jeweler with deep royal roots, and royal editor Emily Nash called it “a lovely connection” to Queen Elizabeth II, whose bond with Peter was well known. In the engagement photographs, the ring sat visibly on Harriet’s hand, its modest scale doing the work of a much louder jewel.

Peter Phillips and Harriet Sperling confirmed their engagement on August 1, 2025, after about a year of dating. Their announcement said both families were informed jointly and were delighted, and that King Charles III, Queen Camilla and the Prince and Princess of Wales had also been told. The couple later said they will marry on June 6, 2026, at All Saints Church in Kemble, Cirencester, in a private ceremony. Harriet, the daughter of the late Rupert Sanders and Mary Sanders of Gloucestershire, is stepping into a royal story where the strongest signal is not carat weight, but the trace of a family jewel returned, through Pragnell, to the public eye.