If you are Catherine, Duchess of Cambridge, having just the right jewel to match every occasion and every outfit is never a problem. She owns a number of fine pieces of her own, plus she can call on the palace’s unparalleled collection when an auspicious event calls for an extra level of bling. Here we take a look at some of the most jaw-dropping jewellery she has rocked since becoming a royal. 5 royal ruby jewellery pieces that Queen Elizabeth would love Queen Mary’s tiara and brooch set: at least US$1 million 😍 Kate Middleton is rocking Princess Diana’s tiara like a true ROYAL! (📷: Getty) pic.twitter.com/tqIPOpLc6T — Entertainment Tonight (@etnow) October 23, 2018 Queen Elizabeth loaned Kate Middleton the Lover’s Knot tiara, plus a necklace and earrings, to wear to a state dinner at Buckingham Palace in October 2018. The items were created by Garrard for Queen Mary in 1913 or 1914. The tiara alone is thought to be worth at least US$1 million today. As if that wasn’t enough, the queen also loaned her Royal Family Order brooch that features a painting of her – said to be the greatest honour a member of the family could receive. “I can confirm that Her Majesty awarded the Duchess of Cambridge with the Order in 2017,” a spokesperson told Vanity Fair at the time – six years after Kate officially became a member of the royal family. Why is the tiara coming back in style? Kate’s engagement ring: US$550,000 Who could forget Kate’s stunning engagement ring? The 12-carat oval Ceylon sapphire surrounded by 14 solitaire diamonds and set in 18k white gold previously belonged to Princess Diana, but unlike many royal jewels, it is not custom-made. The House of Garrard ring came from a selection of stock rings kept by the queen ( as depicted in Netflix’s The Crown ). Although the ring was claimed by Prince Harry after Diana’s death, he gave it to his older brother for his proposal to Kate. William said at the engagement announcement that he gave her the ring because Kate is very special to him, and that it was his way of making sure his mother didn’t miss out on the excitement of the day. The blue bling is valued at a cool US$550,000 today. Princess Diana’s 5 most iconic jewellery pieces – now with Meghan, or Kate? Queen Mary’s choker-turned-bracelet: US$345,000 Kate has often worn Queen Mary’s diamond chain link choker as a bracelet – including paired with a tiara to meet Chinese President Xi Jinping at an October 2015 state dinner. The piece was worn by the queen mother in her 75th birthday official portraits by Norman Parkinson and was loaned to Kate by Queen Elizabeth. Kate wore it again at a black-tie dinner in Paris, France, in 2017. It is estimated to be worth a whopping US$345,000. Why are semi-precious stones fetching thousands at auctions? Kate’s bracelet: US$275,000 Kate’s white and yellow gold diamond bracelet was a gift from the British royal family after she married William. The piece is part of a set that includes matching earrings, but the bracelet alone is valued at more than US$275,000. The precious piece of jewellery is believed to be a gift from her father-in-law, Prince Charles. Fact or fiction? The truth about Prince Charles’ jewellery gifts on The Crown Kate’s Cartier set: US$160,000 Forget the Olympic rings, Kate stepped out during the 2012 London Olympic Games wearing some stunning hoops of her own. She rocked white, yellow and rose 18k gold intertwined circles on a necklace from Cartier. The Duchess of Cambridge donned the show-stopping necklace worth US$71,600 again for an evening reception in New York, while she wore the matching earrings at an event in 2016. The set is worth US$160,000. The guide to royal etiquette – according to Prince Charles’ ex-butler “It’s a personal piece which she’s had for some time. It’s not an official Olympic item but it’s appropriate to wear it,” a St James’s Palace spokesperson said of her Olympic appearance. Want more stories like this? Sign up here. Follow STYLE on Facebook , Instagram , YouTube and Twitter .