Married or not, engagement rings are weirdly easy to obsess over—hence why we just combed through every single celebrity proposal for a definitive ranking of the most expensive rocks of all time.
Being queen of all things extra, we weren't exactly surprised to find out Mariah Carey takes the cake for the most expensive rock. James Packer popped the question in 2016 with a 35-carat diamond and platinum ring crafted by jewelry designer Wilfredo Rosado. The grand total? A whopping $10 million. Unfortunately, the couple never made it down the aisle—but it's rumored that Carey held on to the ring.
Elizabeth Taylor didn't play games when it came to jewelry (or husbands). In 1968, Richard Burton gave Taylor a 33.19-carat Asscher-cut diamond with an estimated worth of $8.8 million. It's no wonder she wore it for the rest of her life.
Kanye knocked his engagement to Kim Kardashian out of the park in presentation alone (of course he rented out a stadium and decked it out with an orchestra and candles), but the 15-carat, $8 million ring definitely sealed the deal.
Leave it to Queen Bey to have one of the world's most expensive rings. Estimated to cost a cool $5 million, Jay-Z popped the question with an insanely gorgeous, 18-carat emerald-cut ring.
Ah, Paris and Paris. Four months after Latsis proposed to Hilton with a 25-carat, $4.7 million rock, the couple went their separate ways.
Post-Ben Affleck, J.Lo received an 8.5-carat, blue-diamond ring from Marc Anthony. While the $4.1 million ring lead the two down the aisle, the couple split up in 2014.
Prince Rainier III of Monaco popped the question with a beautiful, 10.47-carat Cartier rock. The emerald-cut diamond cost Rainier an estimated $4.06 million, but a catch like Kelley is pretty damn priceless.
Although Vanessa and Kobe have been together since 2001, Bryant upgraded her ring two years later with an 8-carat, $4 million diamond.
Aristotle Onassis proposed to Jacqueline Kennedy with what was the most expensive engagement ring of all time in 1968. The massive, 40-carat marquise-cut diamond was named the Lesotho III diamond, worth $2.6 million.
Although smaller than the ring Carey received from James Packer, Nick Cannon gave the singer a beautiful 10-carat, emerald-cut, pink diamond worth a solid $2.5 million.
Honestly, Ryan Reynolds could have proposed to Blake Lively with a plastic ring and we would have been obsessed. But, Reynolds opted for a 12-carat, oval-cut diamond for $2.5 million.
Enrique Iglesias and Anna Kournikova are pretty low-key about their relationship, but that's probably because Kournikova's $2.5 million, 11-carat engagement ring speaks for itself.
Donald Trump proposed to Melania with a 12-carat ring with an estimated worth of $3 million.
Topping Ciara's prior engagement ring from Future, Russell Wilson popped the question with a 16-carat, $2 million rock.
Although their marriage lasted for a total of 72 days, Kris Humphries bought Kim a 16.2-carat diamond for $2 million, which he later auctioned off.
As both a proposal and a birthday gift, Future gave Ciara a $1.5 million, 15-carat, emerald-cut ring.
In their hay day, Tom Cruise proposed to Katie Holmes with a beautiful, 5-carat ring that cost upwards of $1.5 million.
Justin Verlander locked down Kate Upton with an 8-carat diamond worth $1.5 million.
Ben Affleck proposed to Jennifer Lopez with a $1.2 million, 4.5-carat pink diamond that was so damn pretty, the world was genuinely taken aback when Affleck called off the wedding.
Even though Jennifer Aniston admits a massive rock isn't necessarily her style, Justin Theroux won her over with a gorgeous, 10-carat ring worth $1 million.
Now happily married for 17 years, Michael Douglas got down on one knee to give Catherine Zeta-Jones a $1 million, 10-carat diamond.
Hockey player Mike Comrie gave Hilary Duff a 14-carat, princess-cut ring with a $1 million price tag.
After four years of dating, Dwayne Wade gifted Gabrielle Union an incredibly beautiful 8.5-carat, cushion-cut ring with an estimated worth of $1 million.
Although the couple painfully split up in 2013, Lamar Odom proposed to Khloé Kardashian with a 12.5-carat, $850,000 ring—which Kardashian kept post-divorce.
Sure, the world thought George Clooney would never get married, but he proved just about everyone wrong with a 7-carat, $750,000 ring for Amal.
Brad Pitt spent $500,000 on his second engagement ring—this time, it was a 16-carat rock for Angelina Jolie.
Jennifer Aniston and Brad Pitt announced their 1999 engagement with an 8-carat, $500,000 ring that Pitt helped design himself.
On Jennifer Garner's 33rd birthday, Ben Affleck proposed with a 4.5-carat, $500,000 ring from Harry Winston.
There was no way the man who proposed to Lady Gaga would give her an ordinary ring, which is why we weren't even surprised when Taylor Kinney gave her a 6-carat, heart-shaped diamond. Although the couple split before the wedding, the ring cost $500,000.
Prince William proposed to Kate Middleton with the same ring Prince Charles gave to Princess Diana. Although the 12-carat, sapphire ring was valued at $47,000 in 1981, today it's closer to $500,000.
Before their very public split in 2016, Nick Young spent $500,000 on a 10.43-carat ring for Iggy Azalea.
Jason Statham spent $350,000 on a 5-carat ring for longtime girlfriend Rosie Huntington-Whiteley.
Matt Bellamy proposed to Kate Hudson with a 9-carat, $250,000 ring—even though their years-long engagement never resulted in a wedding, the ring looked damn good on Hudson.
Power couple Will and Jada Smith set their engagement with a 12-carat, $250,000 rock.
Reese Witherspoon's second engagement ring is a 4-carat, $250,000 that husband Jim Toth picked out for her.
Tony Parker popped the question to Eva Longoria with a 4-carat ring with an estimated worth of $150,000.
Mike Fisher proposed to Carrie Underwood with the prettiest, most unique ring: a 5-carat, canary-and-white diamond that cost $150,000.
Heidi Klum's engagement ring from Seal was a 10-carat, canary-yellow diamond worth $150,000.
Tom Brady picked out a 5-carat Cartier ring for supermodel wife Gisele Bundchen, costing $145,000.
Pippa Middleton's Art Deco, 5-carat engagement ring cost James Matthew approximately $120,000.
One of many celebrity couples we wished worked out, Russel Brand opted for a 3-cart, $120,000 Cartier ring when he proposed to Katy Perry.
Kristen Bell and Dax Shepard are ridiculously cute (dare we say, couple goals?), and Bell's 3-carat, $100,000 engagement ring is nothing short of perfect.
Josh Duhamel proposed to Fergie with a sparkly, 4-carat diamond for $90,000.
One of the most stylish celebrity engagement rings to date, Oliver Sarkozy proposed to Mary-Kate Olsen with the coolest, 4-carat vintage ring worth $81,000.
Brian Austin Green gave Megan Fox a perfectly cut, 3-carat diamond that cost $80,000.
Recently engaged Kirsten Dunst received a 3-carat, yellow-gold ring that Jesse Plemons is estimated to have spent $80,000 on.