PRINCESS Kate kickstarted the new year with an emotional engagement visiting cancer patients at the hospital where she was treated.

During the visit to the Royal Marsden Hospital in Chelsea, the royal mum-of-three looked elegant in a berry-toned Blaze Milano coat – but it was her earrings that stole the show.

Catherine, Princess of Wales, waving.
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Princess Kate opted for some chic Cartier earrings on her recent visit to the Royal Marsden Hospital in ChelseaCredit: Getty

Trinity earrings in white, rose, and yellow gold.
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These 18-carat Trinity earrings will set you back £3,050Credit: Cartier
For the outing, Princess Kate wore a timeless pair of Cartier earrings from the “Trinity” range.

The earrings feature three intertwined bands in 18-carat white, yellow and rose gold and will set you back £3,050.

The hoops have been seen as a nod to the late Princess Diana, who was a fan of the collection and frequently wore a “Trinity” ring on her little finger.

And it’s not the first time Princess Kate has showcased her love of Cartier among her dazzling jewellery collection…

£50,000 Cartier necklace

LONDON, UNITED KINGDOM - JULY 19: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Catherine, Duchess of Cambridge in her role as patron, visits the 'Road to 2012: Aiming High' exhibition at the National Portrait Gallery on July 19, 2012 in London, England. on July 19, 2012 in London, England. The Duchess of Cambridge as Patron of the National Portrait Gallery visited the exhibition, which showcases commissioned photographs documenting preparations for the London 2012 Olympic and Paralympic Games, and runs from July 19 - September 23. (Photo by Indigo/Getty Images)
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Princess Kate opted for this spectacular Cartier necklace at the National Portrait Gallery during the 2012 OlympicsCredit: Getty Images – Getty

The Duchess of Cambridge at a Creativity is GREAT Britain event.
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Princess Kate also wore the dazzling necklace in New York in 2014Credit: Getty
Back during the 2012 Olympics, Kate dazzled in a blue Stella McCartney dress at an exhibition about the Games at the National Portrait Gallery.

Casually, the royal added a £50,000 Cartier Trinity Necklace with an 18-carat chain.

The 18-carat chain has pavé diamonds as well as three intertwined circles of pink, yellow and white gold.

Kate rewore it again in 2014, at a Creativity is GREAT Britain’s event in New York, where it added some pizzazz to a black roll-neck jumper.

Cartier earrings

Catherine, Duchess of Cambridge, in a blue dress, arrives at an event.
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These Cartier earrings stole the show in 2016 at a SportsAid’s 40th anniversary dinner at Kensington PalaceCredit: Getty

Catherine, Duchess of Cambridge, smiling.
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The necklace and earrings combined are said to be work £121,000Credit: Getty
The Princess of Wales was later seen wearing Cartier earrings in 2016 at a SportsAid’s 40th anniversary dinner at Kensington Palace, and it was thought the set – necklace and earrings – was worth £121,000.

While it was speculated she received the jewellery from Prince William for her 30th birthday, a St James’s Palace spokesman said of the necklace: “It’s a personal piece which she’s had for some time.

Trinity small set

Catherine, Duchess of Cambridge, smiling.
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In France in 2017, Princess Kate wore a small Trinity necklace and earringsCredit: Getty

Prince William and Kate, Duchess of Cambridge, clapping.
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Kate looked every inch a princess in the stylish setCredit: Getty

Cartier Trinity necklace with three interlocking rings in white, rose, and yellow gold.
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Collectively the necklace and earrings retail for £4,050Credit: Cartier
Kate opted for a small, classic version of the Trinity set in 2017 for the Les Voisins in Action event in Paris.

The royal style queen dazzled in the ‘Trinity’ small 18ct white, rose, yellow-gold pendant necklace to match her ‘Trinity’ earrings.

Collectively the set retails for £4,050.

Ballon Bleu watch

Catherine, Duchess of Cambridge, at a Coast Guard station.
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Kate was seen wearing her £6,000 Cartier watch during a royal tour in Canada in 2016Credit: AFP or licensors

Close-up of Catherine, Duchess of Cambridge's wrist, showing a Cartier watch and a red handbag.
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Kate wears the 33mm Ballon Bleu de Cartier watchCredit: Getty – Contributor
For their third wedding anniversary in 2014, William is said to have bought Kate a Ballon Bleu de Cartier watch, which you can buy for around £6,000 today.

We saw the glamorous royal take the pricey watch for a spin as she visited one of her charities, The Art Room, in 2014.

We later saw her wearing it in 2016 as she undertook a royal tour with William in Canada.