1. MEGHAN MARKLE, DUCHESS OF SUSSEX
A three-carat cushion-cut Botswana diamond (it’s where they had their first date!) with two side diamonds flanking the centre stone on a yellow gold band, designed by her now-husband Prince Harry himself.
2. KATE MIDDLETON, DUCHESS OF CAMBRIDGE
An oval Garrard 12-carat Ceylon sapphire surrounded by a cluster of 14 solitaire diamonds set in white gold. The ring used to belong to Princess Diana, and was one of the personal items Diana’s sons inherited when she died.
3. QUEEN ELIZABETH II OF THE UNITED KINGDOM
A three-carat round centre stone flanked with 10 smaller diamonds. Since Philip’s family were relatively poor for royals, Princess Alice gave her son a prized tiara as a wedding present so it could be dismantled and crafted into a ring for his bride.
4. GRACE KELLY, PRINCESS OF MONACO
A platinum Cartier 10.47 carat emerald-cut diamond with two baguette diamonds on each side. It was love at first sight for Prince Rainier, who had met her earlier that year, and proposed three days after visiting her in Philadelphia some months later.
5. PRINCESS EUGENIE OF YORK
A blush-hued padparadscha sapphire – a Sinhalese word for “aquatic lotus blossom” – surrounded by diamonds. Princess Eugenie will be getting married to fiancé Jack Brooksbank this autumn.
6. QUEEN LETIZIA OF SPAIN
A classic baguette band with 16 white diamonds set in white gold trim. Family members of Letizia (who was a news anchor before she became Queen of Spain) picked up the ring at Joyeria Suárez for Felipe.
7. QUEEN VICTORIA
During her reign in the 19th Century, it was customary for a female monarch, due to her high status, to propose to her prospective fiancé. Queen Victoria’s engagement ring had a mix of emeralds, rubies and diamonds and was shaped like a serpent, symbolising loyalty and commitment.
8. CAMILLA, DUCHESS OF CORNWALL
An emerald-cut diamond with three diamond baguettes on each side. It was a family heirloom ring that belonged to Prince Charles’s grandmother, the Queen Mother.
9. QUEEN MAXIMA OF THE NETHERLANDS
An oval-shaped orange diamond ring. Orange may seem like an odd colour choice for an engagement ring, unless you’re Dutch royalty – it's the historic national colour of the Netherlands.
10. QUEEN MARGARETHE OF DENMARK
This Van Cleef & Arpels ring is quite a romantic choice, featuring two large, entwined diamonds, symbolising the Queen, and her husband, Prince Henrik, who sadly died earlier this year.