Untold stories behind Kate’s 18-carat sapphire

It was among the first questions asked after news of the engagement hit the press: What does Kate Middleton’s engagement ring look like? That evening at St. James’s Palace, the world finally got a glimpse of a ring that looked familiar: The 18-carat oval sapphire surrounded by diamonds was the one worn by Princess Diana."I just hope I look after it," Middleton said on Tuesday.Diana chose the r