According to The Sun and The Diana Story, after Princess Diana died in 1997, the royal brothers were allowed to select something to inherit from her jewelry collection. The Diamond Store reported that Prince William selected a gold Cartier watch that had belonged to his mum. Prince Harry picked her engagement ring. However, before Prince William proposed they switched items. Former butler to Princess Diana, Paul Burrell told filmmakers, "Harry said to him: 'Wouldn't it be fitting if she had mummy's ring?'" Burrell described the act as "selfless" and said, "One day that ring will be sat on the throne of England. Harry gave up his precious treasure. His one thing he kept from his mother, he gave to his brother. That's selfless, kind, and exactly who Diana was."

This all happened before Prince Harry met Meghan Markle. While he couldn't propose with his mother's ring, he found a way to make the one he designed super special. The central diamond on Meghan Markle's ring is from Botswana, reports Brides magazine, a place that means so much to the couple.

After Prince Charles proposed, Princess Diana's engagement ring became one of the most sought-after styles for a decade, said The Diamond Store. And while the ring was worth around $60,000 when it was given to Princess Diana, Vogue says it's now valued at closer to $300,000.