4 Grace Kelly's Engagement Ring – $406 Million Coming in at number 4 on the world's most expensive engagement rings is the classic one that Prince Rainier III of Monaco gave Grace Kelly Before J Lo and A Rod, there was J Lo and Marc Anthony Although the couple ended their marriage in 14, 10 years previously Anthony had proposed with a rare blue 85carat diamond ring, worth Grace Kelly's engagement ring and pieces commissioned and worn by the Duchess of Windsor will be among the exhibits at the Grand Palais, Paris, from 4th December celebrating the art and history of
The 19 Biggest Engagement Rings In Celebrity History Marie Claire Australia