Catherine, Princess of Wales, never met Diana. She was nine years old when Diana died, and everything she knows of her mother-in-law's public life she knows the way the rest of us do, through photographs and film and the objects Diana left behind. And yet a meaningful part of Catherine's jewellery box is Diana's: a ring chosen from a catalogue in 1981, a tiara loaned and then returned and then loaned again, pieces that carry someone else's history before they carry hers.
The interesting thing isn't that Catherine wears them. It's which ones she reaches for, and when, and what she's built entirely on her own alongside them. Diana's own story is told in full elsewhere; this is about what happened to her jewellery afterward, and what Catherine chose to do with the parts that were never really a choice at all.
In Brief: Catherine's engagement ring, the Cambridge Lover's Knot tiara, and several other pieces she wears trace directly back to Diana, some inherited outright and others still technically on loan from the Royal Collection. Alongside them, Catherine has built a distinct personal signature of her own, most visibly through the British jeweller Kiki McDonough, whose colourful gemstone earrings she owns more than twenty pairs of and wears constantly for everyday engagements. The split between the two is doing real work: institutional continuity on one hand, personal identity on the other.
The ring
Catherine's engagement ring is the most famous piece of jewellery in the modern monarchy, and it belonged to Diana first. A 12-carat oval Ceylon sapphire surrounded by a halo of 14 diamonds, set in 18-carat white gold, made by Garrard. Prince Charles presented Diana with a selection of rings ahead of his 1981 proposal, and she chose the sapphire herself from Garrard's catalogue instead of commissioning something bespoke, breaking with the tradition that royal engagement rings were made specifically for their wearer. The design traced back further still, to an 1840 sapphire and diamond brooch Prince Albert commissioned from Garrard as a wedding gift for Queen Victoria.
After Diana's death in 1997, the ring passed to her sons. When William proposed to Catherine in 2010, he chose to use it deliberately, saying afterward that it was his way of "keeping her close to it all." The ring didn't quite fit; instead of altering its structure, a jeweller added a line of small platinum beads inside the band to size it. Catherine has worn it every day since.
The tiara
The Cambridge Lover's Knot tells a more complicated story, because unlike the ring, it was never really Diana's to give.
Garrard made the tiara for Queen Mary in 1913, using pearls and diamonds Mary already owned, modelled on an earlier tiara belonging to her own grandmother. On Mary's death in 1953, it passed into the working Royal Collection and eventually to Queen Elizabeth II, who wore it occasionally but favoured other pieces. In 1981, the Queen loaned it to Diana as a wedding gift; Diana wore the Spencer family tiara for the wedding itself, but the Lover's Knot became one of her most recognisable pieces afterward, worn at the State Opening of Parliament and, memorably, with the Catherine Walker "Elvis" gown in Hong Kong in 1989.
When Diana and Charles divorced, the tiara went back to the Queen, since it had only ever been on loan. It disappeared from public view entirely after Diana's death and didn't resurface until 2015, when Catherine wore it to a diplomatic reception at Buckingham Palace. She's worn it regularly since, almost always for state banquets, on the same terms Diana once did: borrowed, not owned, from a collection that outlasts whoever's wearing it.
The pieces in between
Two smaller pieces make the same point in miniature. Queen Mary's emerald and diamond choker, best known for the moment Diana styled it across her forehead as a headband at a ball in Melbourne in 1985, a bold improvisation that made headlines at the time, reappeared on Catherine at the 2022 Earthshot Prize Awards in Boston, worn conventionally, not reinvented. And a pair of sapphire and diamond earrings Diana wore to the 1996 Met Gala turned up on Catherine at Trooping the Colour in 2023.
In each case, the pattern holds: Diana's version tends to be the more theatrical one, Catherine's the more restrained.
What's actually hers
Set against all of this is a body of jewellery that has nothing to do with Diana at all, and it tells a different story about what Catherine has chosen, not inherited.
The British jeweller Kiki McDonough is the clearest example. Catherine owns more than twenty pairs of McDonough's earrings, in citrine, morganite, amethyst, and topaz, worn constantly for the kind of everyday engagement that never makes a state occasion. McDonough herself has spoken about designing specifically with Catherine's working life in mind: "She's a working mother, and I think it is the sort of jewellery that you can wear and no one's going to point the finger at you or run you over in the street because they want your ring." The Lauren Leaf earrings alone, in 18-carat gold with pavé diamonds, have appeared at more than thirty public engagements since 2015.
This is a different register entirely from the inherited pieces. Nobody is tracking the provenance of a £2,300 pair of earrings back through four generations of the Royal Collection. They're simply hers, chosen because she likes them, worn because they suit a life spent moving between engagements instead of sitting in a vault waiting for a state banquet.
The same instinct showed up again at Wimbledon 2026, when she wore a £170 pair of earrings from the independent British brand Carousel Jewels instead of anything from the Royal Collection, and sold the design out within a day. It's the same pattern as the Kiki McDonough pieces: small, personal, chosen on its own merits, with none of the institutional weight the inherited jewellery carries.
The pattern underneath it
Read together, the split isn't incidental. Inherited pieces appear at the moments that call for institutional weight: state visits, formal portraits, the events where Catherine is representing the monarchy's continuity, not herself specifically. Her own choices appear everywhere else, in the much larger volume of ordinary public life a working royal actually has. One says the institution persists. The other says the person wearing it has her own taste, and isn't defined entirely by what she married into.
Quick reference
| Piece | Origin | First worn by Catherine |
|---|---|---|
| Engagement ring | Diana's, chosen from Garrard's catalogue, 1981 | 2010, on proposal |
| Cambridge Lover's Knot tiara | Made for Queen Mary, 1913; on loan from the Royal Collection | 2015, Buckingham Palace |
| Queen Mary's emerald and diamond choker | Royal Collection; worn by Diana, 1985 | 2022, Earthshot Prize |
| Kiki McDonough earrings (various) | Catherine's own, not inherited | 2011 onward |
Frequently asked questions
Did Kate Middleton inherit Princess Diana's jewellery?
Some of it. Diana's engagement ring passed to her sons after her death and William later gave it to Catherine. Other pieces, including the Cambridge Lover's Knot tiara and several items Diana wore, belong to the Royal Collection and were only ever on loan to Diana; Catherine wears them on the same loan basis, not as inherited property.
Why did Kate Middleton's engagement ring belong to Princess Diana first?
Prince William chose to propose with his mother's ring specifically, stating that it was his way of keeping her memory close to the moment. The ring itself was originally selected by Diana from a Garrard catalogue in 1981, a deliberate break from the royal tradition of a bespoke engagement ring.
What jewellery brand does Kate Middleton wear most often?
Kiki McDonough, a British jeweller whose colourful gemstone earrings Catherine has worn consistently since 2011. She owns more than twenty pairs, and several styles, including the Lauren Leaf and Grace designs, have appeared at dozens of public engagements each.
Does Kate Middleton own the Cambridge Lover's Knot tiara?
No. The tiara is part of the Royal Collection and was loaned to Diana in 1981 and later to Catherine in 2015; ownership never transferred to either woman. It returned to the collection after Diana's divorce and remains on loan to Catherine on the same basis today.
Sources: Garrard on the engagement ring's design history; Historic Royal Palaces and Natural Diamonds Institute on the Cambridge Lover's Knot Tiara; Kiki McDonough interviews on designing for Catherine, Daily Mail and Town & Country; contemporary royal reporting on jewellery worn at state occasions.
