Tiffany Trump’s billionaire fiancé Michael Boulos, 23, proposed to the 27-year-old with a 13-CARAT is estimated to be worth up to $1.2M

Denis Stepansky, founder and owner of online luxury retailer ItsHot Diamond Jewelry and Watches, told DailyMail.com that a ring similar to Tiffany’s would cost $1 to $1.2 million.