Regal sapphires, royal rubies and the queen's diamonds, oh my! From Queen Elizabeth’s gorgeous three-carat solitaire to Grace Kelly’s massive 11-carat rock, there are plenty of royal engagement rings worth drooling over. But beautiful bling aside, the blinding shine of the royals' engagement rings often comes with a side of drama. (Think: Multiple marriages, stones from a Romanov dynasty tiara and even post-divorce ring-wearing...). Here, all the royal wedding rings you need to know about.