It was a full-circle royal moment in Paris. Nearly six decades after Grace Kelly presided over the final Paris gala of the Sovereign Order of Malta in 1967, alongside her husband’s cousin, Guy de Polignac, her eldest daughter, Caroline of Hanover, returned to the spotlight at the same glittering event. And she did so in unforgettable style.
The princess turned heads wearing a spectacular sapphire and diamond set with deep family roots. The jewels once belonged to her maternal grandmother, Charlotte of Monaco, and were passed down to Caroline after Charlotte’s death in 1977.
Royal watchers have long noted the striking resemblance between the two women, and at this event, the connection felt especially poignant.
The piece at the center of the look is a dramatic sapphire necklace, believed to have been created by Cartier in the 1940s or 1950s.
Featuring a bold cabochon sapphire surrounded by smaller stones and diamonds, the necklace is one of the most versatile in Monaco’s collection. Caroline has even been known to transform it into a tiara for formal occasions. She paired it with matching oval sapphire and diamond earrings, completing a look that was both regal and effortlessly modern.
The jewel set also carries a powerful sense of history. Princess Charlotte famously wore it in 1956 to the wedding of her son, Rainier III, and Grace Kelly, a moment that captivated the world and marked the beginning of Monaco’s modern royal image.
But behind the glamour lies a more complicated family story. Charlotte’s relationship with her only daughter, Antoinette of Monaco, was often described as distant and strained. Much of the tension stemmed from royal succession, although Antoinette was the elder sibling, the throne passed to her younger brother Rainier.
In the 1950s, she reportedly attempted to challenge his position and was temporarily exiled from court. The relationship softened only years later, particularly after Grace Kelly’s death in 1982.
Today, the Grimaldi jewels remain some of Europe’s most fascinating royal treasures, but with a unique twist. Monaco does not have official state Crown Jewels. Instead, its historic pieces belong to the Palais Princier de Monaco Collection and are loaned to family members for major events.
Caroline has become the collection’s leading ambassador, frequently wearing pieces passed down from both her grandmother and her mother. Among them is the elegant Pearl Drop Tiara by Cartier, originally gifted to Princess Charlotte in 1920, as well as a set of 19th-century diamond flower brooches that she once lent to Charlene, Princess of Monaco for her 2011 wedding. She also regularly wears diamond earrings inherited from Charlotte at high-profile events.
The royal jewelry collection expanded significantly when Grace Kelly joined the family in 1956, bringing with her both Hollywood glamour and extraordinary pieces.
Her Cartier engagement ring, a 10.48-carat emerald-cut diamond, remains iconic, while the Bains de Mer Tiara, a gift from the Société des Bains de Mer, added bold ruby and diamond designs to the collection. A Cartier diamond festoon necklace later made headlines again when her granddaughter, Charlotte Casiraghi, wore it at her 2019 wedding.
More recently, Charlene, Princess of Monaco has introduced a fresh chapter in Monaco’s royal style. To help define her own look, Prince Albert II commissioned new, modern pieces just for her.
Among them is the Ocean Tiara by Van Cleef & Arpels, featuring more than 850 diamonds and 359 sapphires designed to resemble ocean waves, a nod to her past as an Olympic swimmer. She has also worn the Diamond Foam Tiara by Lorenz Bäumer, inspired by sea spray.
For Caroline, however, this latest appearance was all about honoring the past while keeping it alive in the present. Stepping out in Paris in her grandmother’s sapphires, she didn’t just attend a glamorous ball, but also carried forward a royal legacy.
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