Grace Kelly

The late Grace Kelly is still remembered as one of the classiest, most elegant ladies ever to walk the planet. The former American film actress got the attention of Prince Rainier III of Monaco, who seduced her (along with other methods) by presenting her with not one, but two massive diamond jewels!

Kelly and Rainier III tied the knot in 1956 and became one of the world’s most famous couples. Kelly’s largest ornament is a 10.4-carat stone with a beautiful square-shaped cut and an estimated price tag of over $4.3 million.