The Cambridge Lover's Knot Tiara is a diamond and pearl tiara commissioned by Queen Mary in 1913–1914 from the British court jeweller Garrard, featuring nineteen hanging pearl drops suspended from lover's-knot bows set with brilliant-cut diamonds. The tiara was modelled on a similar piece owned by Mary's grandmother, Princess Augusta of Hesse-Cassel, and was constructed using diamonds and pearls from the Cambridge family's existing jewellery holdings. Worn frequently by Diana, Princess of Wales, in the 1980s and subsequently by Catherine, Princess of Wales, from 2015 onward, the Lover's Knot Tiara is one of the most recognisable pieces in the British Royal Collection and an exemplar of Edwardian formal jewellery.

Commission and construction

Queen Mary commissioned the tiara from Garrard in 1913 to commemorate her own family heritage and the broader Cambridge family inheritance she had brought to the British Crown through her marriage to George V. The original Cambridge Lover's Knot Tiara — the piece owned by Princess Augusta of Hesse, Mary's grandmother — provided the design template, with the new commission produced as a more elaborate and formally substantial version of the inherited original. The Cambridge family pearls and diamonds were used in the construction, providing both material continuity with the family heritage and the very high quality of the principal stones.

The tiara's structure consists of a circular openwork band of platinum set with brilliant-cut diamonds, formed into nineteen lover's-knot bows around the circumference. From each bow hangs a substantial pearl drop, suspended on a small diamond-set link that allows the pearl to swing freely with the wearer's movement. The combination produces a tiara that catches and reflects light continuously as the wearer moves, with the swinging pearls providing animation that fixed-mount tiaras of similar period do not match.

Queen Mary's tenure

Queen Mary wore the tiara extensively through her decades as queen consort and queen mother, and the piece appears in many of the formal photographs of her that constitute the visual record of her tenure. The tiara was treated as part of her personal jewellery rather than as Crown property, with the result that it remained available for personal use through the period and was not absorbed into the more formal Crown Jewels collection that is restricted to State use.

The tiara passed from Queen Mary to her daughter-in-law Queen Elizabeth (the Queen Mother) on Mary's death in 1953, and subsequently to Queen Elizabeth II on the Queen Mother's death in 2002. Throughout this period the tiara remained in occasional use, most notably by Queen Elizabeth II at various State occasions through the second half of the twentieth century.

Diana, Princess of Wales

Queen Elizabeth II loaned the tiara to Diana, Princess of Wales, on the occasion of her 1981 marriage to Prince Charles, and the piece became one of Diana's most frequently worn formal jewellery items through the 1980s. The tiara appears in numerous high-profile photographs of Diana from the period, including official portraits, State occasion photographs, and the substantial press-photography coverage that characterised her public visibility. Diana's wear of the tiara substantially elevated its public recognition; the piece had been familiar to Royal-watchers and jewellery historians before Diana's tenure but became broadly internationally famous only through the 1980s coverage.

Diana's wear of the tiara was reportedly not always comfortable; the substantial weight of the piece and the fact that the swinging pearl drops can pull at the wearer's hair are documented sources of physical discomfort that the photographs occasionally show. The piece was withdrawn from her use after the 1996 separation and divorce, and remained in the Royal Collection through subsequent decades.

Catherine, Princess of Wales

Catherine, Princess of Wales (the former Catherine Middleton, married to Prince William in 2011), began wearing the Lover's Knot Tiara at State occasions from 2015 onward, with the piece appearing at multiple Diplomatic Reception events at Buckingham Palace and at other formal State occasions. The Princess's wear of the tiara has continued the public visibility of the piece into the present and has emphasised the design continuity of the British Royal Family's formal jewellery practice across generations.

The Princess's wear of the same tiara that her late mother-in-law had worn extensively in the 1980s has been read in much of the press coverage as a deliberate gesture of familial continuity and tribute, although the practical considerations — the tiara's particular suitability to formal Diplomatic occasions and its established place in the Royal jewellery rotation — likely contribute to the selection independently of the broader symbolic resonance.

Construction and maintenance

The tiara is mounted in platinum with brilliant-cut diamonds throughout the openwork structure and the lover's-knot bow elements. The pearl drops are pearls of substantial size and quality, originally drawn from the Cambridge family pearl holdings; some of the pearls have been replaced over the tiara's century-plus history as wear and damage have required, but the overall character of the pearl complement has been maintained throughout. The tiara is held in the Royal Collection's working jewellery storage and is maintained by the Royal Household's jewellery staff, with periodic cleaning and inspection part of the standard maintenance practice.

In the trade

For collectors and observers of Royal jewellery, the Lover's Knot Tiara is one of the most extensively photographed and most recognised pieces in the British Royal Collection. The piece's history through Queen Mary, Queen Elizabeth, the Queen Mother, Queen Elizabeth II, Diana, and Catherine constitutes a continuous record of British Royal formal jewellery wear across more than a century, and the visual record of these wearings provides one of the principal references for understanding Edwardian and contemporary formal jewellery practice. Skyjems treats the Lover's Knot Tiara as a significant historical reference rather than as a market piece (the tiara is unlikely ever to leave the Royal Collection), and considers it one of the principal examples for understanding the design and execution of Edwardian high jewellery.

Further reading

• Royal Collection Trust — Royal jewellery collections
• GIA Gems & Gemology — historical Royal jewellery
• Victoria and Albert Museum — Edwardian jewellery reference