Elizabeth Taylor with her wedding ring, a massive sapphire encircled with two rows of diamonds. Photo by New York Daily News Archive via Getty Images.
Jennifer Lopez flashes her engagement ring to Ben Affleck in 2003. Photo by Kevin Winter/Getty Images.
Grace Kelly shows off her engagement ring to Jimmy Stewart on the set of Rear Window. Photo by John Kobal Foundation/Getty Images.
Lady Diana Spencer, pre-Princess Di. Photo by Tim Graham/Getty Images.
Victoria Beckham in 2007. Photo by Tony Barson/WireImage.
Beyoncé reveals her engagement ring at the U.S. Open in 2011. Photo by Getty Images.
Anne Hathaway's ring is on display at the Iron Lady premiere in 2011. Photo by Getty Images.
At the Women in the World Summit in 2013, Angelina Jolie shows off her engagement ring with Brad Pitt. Photo by Getty Images.
Olivia Wilde at the premiere of Drinking Buddies in Hollywood, California, August 2013. Photo by Getty Images.
Scarlett Johansson's high-wattage engagement ring glitters at the Don Jon premiere in 2013. Photo by Taylor Hill/FilmMagic.
Kim Kardashian offers a glimpse of her engagement ring to Kanye West in 2013. Photo by Jason LaVeris/FilmMagic.
Chrissy Teigen got engaged shortly before the Billboard Music Awards in 2015. Photo by Getty Images.
Allison Williams's engagement ring, at a Girls screening in 2014. Photo by Getty Images.
Lady Gaga's heart-shaped diamond, at a screening of American Horror Story: Hotel in Los Angeles, California, October 2015. Photo by Getty Images.
Another royal — here, Catherine, Duchess of Cambridge, in 2015 — with another decadent engagement ring. Photo by Max Mumby/Indigo/Getty Images.
Jennifer Connelly boasted an art deco-inspired ring from husband Paul Bettany earlier this year. Photo by Getty Images.
Julianne Hough does double duty with an engagement ring and a midi-ring twist at the NHL All-Star Party in Pasadena, California, January 2016. Photo by Getty Images.
Amal Clooney at the premiere of Hail, Caesar! in Los Angeles, California, February 2016. Photo by Getty Images.
Kate Upton made sure her ring got its share of the spotlight at this year's Met Gala, May 2016. Photo by Getty Images.
Ditto for Ciara, who showed off a ring from fiancé Russell Wilson. Photo by Getty Images.