These may be the most breathtaking royal engagement rings of all time

After Prince Harry and Meghan Markle announced their engagement on Monday morning -- and stunned with a gorgeous solitaire surrounded by Princess Diana's diamonds -- we couldn't help but reminisce about other buzzworthy royal rocks.

From Princess Grace of Monaco to Queen Letizia, these stunning engagement rings have brought all our fairy tale dreams to life. Whether it's a family heirloom or a second-round 10-carat Cartier, a simple diamond eternity band or a fiery auburn ruby the royals sure know how to do an engagement.

Scroll through above to see our favorite royal rocks fit for a princess!

Related: We've fallen in love with these unique rings: