Princess Anne, the only daughter of Queen Elizabeth, has two sapphire and diamond engagement rings. Learn more about the unique proposal pieces, here.

Kate Middleton's engagement ring features a blue sapphire stone surrounded by 14 round-cut solitaire diamonds. It's set in 18-carats of white gold. The ring originally belonged to Princess Diana.

The royals love to rewear and repurpose when it comes to engagement rings When a member of the royal family puts a ring on it, it normally comes with a heavy dose of history and sentiment. When Prince ...

In 1981, Prince Charles, 32, proposed marriage to Diana Spencer, 19. They were a couple for six months before announcing their engagement on Feb. 24, 1981. Instead of presenting Diana with a ring upon ...