We created a spreadsheet that crunched over forty recent celebrity engagements and analyzed the carat, cut, and cost of each and every engagement ring. Some of our favorites that didn't make the list are Jackie O's engagement ring (40-carat diamond ring, auctioned for 2.6 million dollars in the year 1996), Elizabeth Taylor's Krupp Diamond (a 33-carat present from her then-husband Richard Burton), and Kate Middleton's sapphire engagement ring, which once belonged to the late Princess Diana. Other facts that didn't make the list include a celebrity guide to diamond cuts. Did you know Chris Martin proposed to Gwyneth Paltrow with an asscher cut ring? Or Katherine Heigl's wedding ring featured a pear-cut diamond? Types of Cuts Asscher - Gwyneth Paltrow Cushion - Jennifer Garner Emerald - Angelina Jolie Marquise - Catherine Zeta Jones Oval - Katie Holmes Pear Katherine Heigl Princess - Christina Aguilera Radiant - Jessica Biel Round - Natalie Portman Source: US Weekly, Celebrity Bride Guide