Kate Middleton
The engagement ring given by Prince William to his then fiancé Kate Middleton was not just pretty, but it was also one of the most popular engagement rings in the world. This is because it was the same ring that his father Prince Charles, gave to her mother Princess Diana, when he proposed to her. Prince William popped the question during their 10-day vacation at an African safari. The 12-carat blue sapphire ring originally had the value of $47,000. However, it’s now valued at $500,000!
