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Queen Elizabeth II’s jewelry box is full of pieces that have stood the test of time — including today’s spotlighted piece, her Golden Trellis Brooch.

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The brooch, which features a quintet of diamond and ruby leaves attached to a waving, net-like golden trellis, was one of the wedding gifts presented to the then-Princess Elizabeth in 1947.

She has been wearing the brooch regularly since receiving it. In May 1948, she chose the brooch for a boat ride on the Seine during her visit to Paris.

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In April 1989, the Queen paired the brooch with a red ensemble during Mikhail Gorbachev’s official visit to Windsor Castle.

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Two years later, she emphasized the brooch’s subtle ruby details by wearing it with vibrant pink to host Lech Walesa at Windsor Castle for his 1991 state visit to Britain.

In recent years, the Queen has still frequently chosen the brooch for various occasions. In December 2016, she paired the brooch with a buttery yellow outfit for a visit to Goodenough College in London.

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Interestingly, she has also chosen the brooch twice for the same event: the launch of the Commonwealth Games baton relay at Buckingham Palace. For the October 2013 launch, held ahead of the 2014 Glasgow Games, she wore the brooch with tweed…

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…and for the March 2017 launch, held ahead of the 2018 Gold Coast Games, she wore the brooch with vibrant violet.

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Your best bet for spotting the trellis brooch, however, is in photographs from audiences at Buckingham Palace. She often chooses the piece for such occasions, including this audience with the Lieutenant Governor of Prince Edward Island in March 2018.

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The Queen’s personal brooch collection is so vast in part thanks to the jewelry she inherited from her mother, the late Queen Mum. Today’s piece, the Queen Mother’s Palm Leaf Brooch, has been a favorite of both royal women.

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The Queen Mother commissioned Cartier to make the Palm Leaf brooch for her in 1938. The jewelers used loose diamonds that were already in her collection to construct the piece, which jewel lovers have noted also shares a major resemblance to a paisley motif. Indeed, one of the French translations for the word paisley is “palme.”

The design takes its English name from the Scottish town of Paisley, where weavers produced shawls featuring the design in the nineteenth century. But the design pattern is much older. The pattern woven into the Scottish shawls was based on designs found on textiles imported by the East India Company from Asia. These textiles often featured floral patterns with curved teardrop shaped designs, originally produced in Persia, called “boteh.”

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The pattern was used extensively in artwork and art objects from India, including the palm-shaped sarpech ornaments worn by Indian princes on their turbans. The boteh patterns were replicated by the weavers in Paisley, and as the shawls they produced became more and more popular, the pattern began to be generically called “paisley” by English speakers.

The incorporation of a paisley pattern in a brooch was an especially appropriate choice for the Queen Mother, who came from a Scottish aristocratic family. She wore the brooch for the rest of her life. One memorable appearance came in February 1952, when she wore the brooch at King’s Cross Station as the body of her husband, King George VI, arrived from Sandringham. The occasion was captured in the famous “Three Queens in Mourning” photograph.

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During her widowhood, the Palm Leaf Brooch remained a staple in the Queen Mum’s jewelry wardrobe. Above, she uses the brooch to secure her poppies on Remembrance Sunday in November 1960. (She’s standing on the balcony between her sister-in-law, Princess Alice, Duchess of Gloucester, and her son-in-law, Antony Armstrong-Jones, 1st Earl of Snowdon.)

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She was also captured wearing the brooch in February 1964, when she made a reassuringly glamorous appearance as she was discharged from the hospital after an operation.

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Decades later, the Palm Leaf Brooch was still one of her favorites. Only a few months before her hundredth birthday, the Queen Mother wore the brooch at Cheltenham, where she presented trophies after the Queen Mother Champion Chase.

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When the Queen Mother died in 2002, her jewelry was inherited by her daughter, the Queen. She has since divided up the collection, offering several pieces to other members of the royal family (especially the Duchess of Cornwall) as long-term loans. But she has kept the Palm Leaf Brooch for her own personal use, and today it is one of her most frequently worn brooches. Above, she wears the brooch in November 2012 for the dedication of the Diamond Jubilee Window at The Queen’s Chapel of the Savoy.

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One of the Queen’s most recent prominent appearances in the brooch came in March 2018, when she wore it for the decomissioning ceremony for HMS Ocean. (Oh, and there was also that much-analyzed moment from this summer, too — the brooch is everywhere!)

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The Queen and the Duke of Edinburgh celebrated their 71st wedding anniversary on Tuesday, but the monarch didn’t get the day off. Instead, she was out and about in diamonds and rubies in London.

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The Queen stepped out for a visit to the Royal Institute of Chartered Surveyors in central London. The institute is celebrating its 150th anniversary.

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For the visit, the Queen chose a brooch that’s been in her collection since at least the 1960s: her ruby and diamond spray brooch.

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Here’s a closer look at the diamond, gold, and ruby brooch, which is definitely mid-century in its design. I don’t believe we have any provenance information for this piece, but the Duke of Edinburgh was certainly known to buy his wife unusual modern jewelry, especially in the first two decades of their marriage. Perhaps, as it was worn on their wedding anniversary, the brooch might have been a present from her husband?