Kim Kardashian's gigantic engagement ring from ex-husband Kris Humphries has been sold at an auction.

Us Weekly confirmed that Kardashian's 20-carat ring sold at a Christie's auction on Tuesday for a whopping $620,000 to an anonymous buyer. Bidding started at $200,000. With the auction house's markup, the total price will come to $749,000 for the bauble once worn by the reality starlet.

The Lorraine Schwartz-designed ring features a 16.21-carat rectangular-cut center stone with an I color and VS1 clarity, according to Forbes. Two 1.8-carat trapezoid stones bookend the massive rock. It cost Humphries $2 million at the time of their 2011 engagement.

News of the auction first surfaced in September. Christie's listed it as the "Property of a Gentleman" and estimated it could sell for up to $500,000. It was later revealed to be the property of the Boston Celtics player.

"The ring is indeed Kris' property that he received through his marriage dissolution," Humpries' rep said in a statement to E! News at the time. "He has long-since moved on and is very much looking forward to a successful auction at Christie's on Tuesday, and of course to returning to the court this upcoming NBA season as a Boston Celtic."

Apparently, Kardashian was happy to be rid of the ring (even though she said it was "the most beautiful thing" she had ever seen after the proposal).

"Kim has been waiting for the day he would auction it," a source previously told Us Weekly. "Everyone always asked what Kim did with the ring -- she silently gave it back over a year ago! And Kris waited until the divorce was final to sell it."

A portion of the proceeds from the auction will be donated to charity, Forbes reported.

kim kardashian engagement ring

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  • Kris Humphries

    Kardashian <a href="http://www.huffingtonpost.com/2010/12/07/kim-kardashian-dating-kris-humphries_n_793278.html" target="_hplink">began dating New Jersey Nets player Kris Humphries</a> in December 2010 after watching him play basketball in late November. The pair took their fast-moving relationship to the next level when Humphries <a href="http://www.huffingtonpost.com/2011/05/25/kim-kardashian-kris-humphries-engaged_n_866631.html" target="_hplink">proposed</a> -- on camera for her E! reality show, of course -- in May and they wed on August 20, 2011. But the wedded bliss ended October 31, 2011 when Kim filed for divorce after 72 days of marriage.

  • Gabriel Aubry

    Halle Berry and Gabriel Aubry announced their split in April 2010, and in November, the model was <a href="http://www.huffingtonpost.com/2010/11/22/kim-kardashian-gabriel-aubry-_n_786940.html" target="_hplink">spotted out and about with newly-single Kardashian</a>. The couple enjoyed a Lakers game and a movie date together, but less than a month later, Kardashian would meet Kris Humphries -- and he would sweep her off her feet.

  • Michael Copon

    Kardashian was rumored to be <a href="http://www.huffingtonpost.com/2010/10/07/michael-copon-kim-kardash_n_753863.html" target="_hplink">casually dating</a> "One Tree Hill" actor (and her "Beyond The Break" co-star) Michael Copon in October 2010, and he even appeared on her E! reality show, "Kourtney & Kim Take New York," but that's about it.

  • Miles Austin

    Kardashian switched teams after splitting from Bush -- literally. She began dating Dallas Cowboys football player <a href="http://www.huffingtonpost.com/2010/07/13/kim-kardashian-boyfriend_n_644504.html" target="_hplink"> Miles Austin in July 2010</a> but the pair <a href="http://www.people.com/people/article/0,,20427399,00.html" target="_hplink">split in September</a> after just a few months together.

  • Reggie Bush

    Kardashian found love once again later in 2007 -- this time with football player Reggie Bush. Their relationship drama was documented on the E! reality show, "Keeping Up With The Kardashians," and we thought Kim had finally found "The One." However, the on-and-off couple <a href="http://www.eonline.com/news/hwood_party_girl/kim_kardashian_reggie_bush_split_again/172983" target="_hplink">ended things for good in March 2010</a>. Bush continues to play football -- now for the Miami Dolphins -- and was most recently linked to Melissa Molinaro, an actress <a href="http://www.huffingtonpost.com/2011/06/22/reggie-bush-now-dating-kim-impersonator_n_882234.html" target="_hplink">bearing a striking resemblance</a> to Kardashian.

  • Nick Cannon

    After her split from Ray J, Kardashian moved on with actor/rapper/comedian Nick Cannon. The couple reportedly split in early 2007 after the release of Kardashian's sex tape. Cannon, who is currently a radio personality on New York's 92.3 NOW FM, tied the knot with Mariah Carey in April 2008. The couple welcomed their first children, fraternal twins, in April 2011.

  • Ray J

    Also in 2006, Kardashian dated R&B singer Ray J -- who is the brother of singer Brandy. The relationship didn't last, but the public release of their infamous sex tape in early 2007 shot Kardashian into the spotlight...and eventually got her $5 million after settling a lawsuit against Vivid Entertainment. Ray J went on to star in the VH1 reality show "For The Love of Ray J" in 2009, and continues to work in the music industry.

  • Nick Lachey

    After her divorce, then-stylist Kardashian <a href="http://www.people.com/people/article/0,,1199443,00.html" target="_hplink">casually dated</a> Nick Lachey in 2006 -- just six months after his divorce from Jessica Simpson -- but they were never serious. Lachey also began dating TV personality Vanessa Minnillo in 2006 and the couple married in July 2011.

  • Damon Thomas

    Kardashian may be walking down the aisle on August 20, but it's not the first time she's been a wife. The reality star married 30-year-old music producer Damon Thomas in 2000 when she was just 20 years old. Their love wasn't meant to last, however, and the couple split in 2004. In 2010, their divorce papers were <a href="http://www.huffingtonpost.com/2010/05/05/kim-kardashians-ex-damon_n_563949.html" target="_hplink">leaked to the press</a>, revealing Kardashian claimed Thomas was physically abusive toward her. Thomas denied the allegations and <a href="http://www.huffingtonpost.com/2010/05/05/kim-kardashians-ex-damon_n_563949.html" target="_hplink">responded with a press release</a> where he called her a fame-loving liar.