A major perk of being Queen Elizabeth's granddaughter-in-law is that Kate Middleton has an unrivaled archive of jewelry from which to choose when dressing for royal events, including everything from iconic tiaras to priceless rings to gem-encrusted earrings.

Since her wedding day — when she famously borrowed the Cartier Halo tiara from Her Majesty's enviable collection — the Duchess of Cambridge has been loaned a number of striking pieces from the royal vault, whether that's the Cambridge Lover's Knot tiara (a favorite of Princess Diana), the Queen's pearl earrings, or a diamond bracelet, given to the then-Princess Elizabeth by her fiancé upon their engagement.

kate middleton and queen elizabeth

When it comes to her rings however, the Duchess tends to keep things more low-key, sticking with a handful of pieces with sentimental value. From the engagement and wedding rings she's rarely seen without (and the secret third ring you might not have spotted yet) to the gift she received from Prince William in the early days of their relationship. Scroll down to read about all of Kate's favorite rings!

The sapphire engagement ring

The most recognizable piece in the Duchess's enviable jewelry collection has to be her engagement ring, which famously belonged to her late mother-in-law Princess Diana. Prince William proposed to Kate with the 12-carat sapphire ring set in 18 carat gold, encrusted with 14 solitaire diamonds, on a trip to Kenya, and later revealed that he carried the valuable heirloom around in a rucksack for three weeks beforehand.

"Obviously, [Diana]'s not going to be around to share in any of the fun and excitement of it all, so this is my way of keeping her close," he explained after the engagement was announced.

kate middleton engagement ring

The citrine ring

Kate's yellow citrine ring caught our attention at Prince Harry and Meghan Markle's wedding. Though it appeared to be a new addition to the Duchess's collection, with many outlets speculating that the piece was a "push present" following the birth of Prince Louis in April, it also bears more than a slight a resemblance to a similar style which Kate was last pictured wearing in 2009. Given Kate's fondness for recycling older pieces from her wardrobe, it makes sense that she'd adopt a similar approach with her jewelry box.

kate middleton push present

The rose-gold band

Prince William gave Kate this understated Victorian rose-gold band while they were studying at St Andrews, and she was photographed wearing it at her graduation ceremony in the summer of 2005. Thought to be the first piece of jewelry Kate received from her future husband, it carries a special significance, set with pearls (William's birthstone) and garnets (Kate's), though the Duchess hasn't been spotted wearing it since her engagement announcement.

kate middleton gold band

The gold wedding ring

In keeping with royal tradition dating back nearly a century, Kate's wedding ring was crafted from a chunk of Welsh gold by Mayfair-based jewelers Wartski, which was given to Prince William by the Queen following the announcement of his engagement. You might recall that the Prince had a little trouble fitting the ring onto his new wife's finger on his wedding day: worried that the ring might slip off due to her having lost some weight in the run-up, Kate asked the royal jeweler to make the band smaller, and it seems they did their job almost too well!

kate middleton wedding ring

The platinum eternity ring

Eagle-eyed royal fans might have noticed that Kate typically layers not one but three rings on her wedding finger. In addition to the gold band and her engagement sapphire, the Duchess now wears an eternity ring, specifically the Eclipse diamond eternity ring, made from 18 carat white gold, by Annoushka. It's thought that the band was a gift from her husband, marking the birth of their first child Prince George.

kate middleton rings getty images

The ruby ring

The Duchess gave this striking ruby ring its first outing when she touched down in Warsaw as part of the royal tour of Poland last summer. She paired it with a white peplum coat from go-to brand Alexander McQueen and matching ruby pendant and earrings, echoing the colors of the Polish flag. As yet, the ring has not been attributed to a specific jeweler, though perhaps if she gives the piece another outing, we'll be able to have a closer look.

kate middleton ruby ring

This post was written by Katie Rosseinsky. It originally appeared on our sister site, Grazia Daily.

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