Inside 8 Royal Engagement Rings Worth Millions — The Stories Behind the Stones

Royals (1 / 1) 29.04.2026 22:02 / Frank

Royal sparkles hide surprising tales — movie sets, secret proposals, heirloom swaps and catalog picks produced some of the most talked-about engagement rings in history. From Grace Kelly’s Cartier to Diana’s sapphire, each jewel carries a story and a hefty price tag. Read on to discover the full story!

Princess Grace — the Cartier classic

Grace Kelly received two rings from Prince Rainier: an infinity band made with family rubies and diamonds, and a Cartier emerald-cut diamond given during the filming of her final movie. That 10.48-carat center stone with baguette side stones is now estimated at $38.8 million.

Wallis Simpson — a secret, inscribed emerald

Wallis, Duchess of Windsor, was secretly engaged with a 19-carat emerald-and-diamond ring engraved "We Are Ours Now." The piece sold at Sotheby’s in 1987 for $1.98 million, equal to about $5.69 million today.

Queen Margrethe of Denmark — a toi et moi design

Margrethe’s Van Cleef & Arpels engagement ring paired two diamonds in a toi et moi style set in yellow gold; each stone was reported near 6 carats, valuing the ring around $750,000 to $1 million now.

Princess Diana — a catalog choice turned iconic

Diana selected a 12-carat Ceylon sapphire ring from Garrard’s catalog, set in 18k white gold and framed by 14 solitaire diamonds. Initially modestly valued, its current estimate is about $520,000.