This ring is set with a 7.4 carat emerald surrounded by 12 pear shaped diamonds and has enormous sentimental value. Because diamond rings have always been the ultimate gift of eternal love, it is no surprise that Burton chose to give such a item to the woman who really can afford to buy herself anything. Experts in their field, a few years ago Christies auctioned Marilyn Monroe’s diamond engagement ring for a staggering $700,000. Stars including Elton John, Robert De Niro, and Barbra Streisand are regulars at these types of auctions, delighted to be given an opportunity to purchase a beautiful diamond ring while contributing to charity at the same time.