Star Magazine had a huge feature about Prince William‘s upcoming wedding to fiancee Kate Middleton. They break down all the wedding expenditures, from the $200,000 wedding dress to possible celebrity attendees such as Michelle Obama and Paul McCartney. But the most interesting tidbit (well, at least for us) was about the engagement ring. Princess Diana’s famous blue sapphire engagement ring will be worn by Prince William at the ceremony and then passed along to Middleton.

“He wants her to wear it in honor of his mother,” a source tells the tabloid.

In addition to the $1 million inherited engagement ring, Middleton will also wear a wedding band made from gold mined at the River Mawddach in North Wales. Charming.