When you're proposing to a millionaire movie star/singer/perfume mogul, you don't just buy her any old ring. In 2002, Cambridge's Ben Affleck presented Jennifer Lopez with a 6.1 carat pink-diamond solitaire that reportedly cost $1.2 million when he asked for her hand in marriage. She said yes.

However, as the Beatles once sang, money can't buy love -- the couple split in 2003 before their wedding.