The soon-to-be princess's beautiful blue sparkler isn't the only nontraditional bling out there. Newly betrothed Jessica Simpson showed off a ruby piece this weekend, Carmen Electra received a black diamond from her fiancé, and now married Carrie Underwood sported yellow ice.
So which star is rocking the prettiest colored rock? Click in for a close-up:
Carrie's 12-plus carat round yellow diamond ring by Johnathan Arndt is flanked by two rows of white pave diamonds.
Kate's now the proud owner of you-know-who's 18-carat sapphire surrounded by 14 smaller diamonds.
Jess goes red with a 5-plus-carat ruby flanked by two pear-shaped diamonds courtesy of Neil Lane.
And though it's unclear what size Carmen's bling is, the star says the goth black diamond is "perfect for us—it's our style."
All these symbols of love and devotion are obvs gorgeous, but which ice is coolest? Weigh in below!