The Biggest Celebrity Engagement Rings

The former model stepped out in London for her first public outing since the engagement announcement to billionaire Ruper Murdoch and an enormous sparkler graced her left ring finger. The piece appeared to feature a unique marquise-shaped diamond on a platinum band.

Statham proposed to Huntington-Whiteley with an early 20th century flawless diamond from Neil Lane's archival collection, according to People StyleWatch. The stone is still in its original Edwardian setting, and features smaller diamonds on a platinum band.

Movie producer Michael Todd proposed to Elizabeth Taylor with a massive 30-carat diamond ring. The couple married in 1957 and divorced a little over a year later.

Brad Pitt proposed to longtime partner Angelina Jolie in April 2012 with a rectangular diamond ring estimated to be more than 10 carats. The couple married in 2014.

Jay-Z proposed to Beyonce Knowles with an 18-carat diamond ring; the couple married in 2008.

President John F. Kennedy proposed to Jackie Bouvier with a 2.88-carat diamond ring. The two married in 1953.

NHL player Mike Fisher proposed to country crooner Carrie Underwood with a 12-carat ring by Jonathon Arndt in 2010. The couple married later that same year.

Nick Cannon proposed to pop diva Mariah Carey with a stunning 17-carat emerald-cut pink diamond ring surrounded by 58 pink diamonds. The couple married in 2008, and got divorced in early 2015.

Rocker Matthew Bellamy proposed to Kate Hudson in 2011 with a 9-carat emerald-cut diamond ring with tempered baguettes. The couple split in 2015.

Coldplay frontman Chris Martin proposed to wife Gwyneth Paltrow with an 8-carat diamond ring. The two married in 2003 and consciously uncoupled in 2014.

Agent and talent manager Jason Trawick popped the question to Britney Spears on his 40th birthday in December 2011 with a 4-carat round white diamond ring featuring 90 small round diamonds along the band, a design by celebrity jeweler Neil Lane. The couple split in 2013.