Kim Kardashian's engagement ring is worth almost HALF as much as her Beverly Hills mansion. Sources close to the diamond tell TMZ the rock is valued at $2 MILLION!!!!!! After Kim Kardashian and basketball player Kris Humphries split up after only 72 days of marriage, she gave back the ring. The 20-plus-carat ring designed by Lorraine Schwartz was sold at Christie’s for $749,000, considerably less than the original $2 million Humphries spent on it, but above the auction estimate of $500,000.

What to do with some extra bling lying around? Auction it, of course!

At least that may be the case for Kris Humphries, who still has his hands on the massive diamond ring that was previously given to ex-wife Kim Kardashian.

According Daily Mail reports, the NBA player, who won the 16-carat rectangular-cut diamond ring in the couple's June 2012 divorce, is hoping to cash in on the jewelry this fall via private auction. The bauble cost a cool $2 million at the time of purchase and is now valued at a mere $300,000 to $500,000.

A diamond sparkler matching the same description is anonymously being auctioned off by Christie's in New York, and we can't help but wonder if this is, in fact, the famous ring.

So is it or isn't it?

While we have yet to hear the official word from the athlete's camp, it does appear to be a pretty exact match, if you ask us! Either way, the new owner of that sizable sparkler is bound to be one lucky lady.

The Lorraine Schwartz custom piece is mysteriously listed as the 'property of a gentleman' with a portion of the proceeds to benefit a charity.

To note, plenty of celebrities have famously auctioned off pricey pieces to make room for more swag, donate funds to a good cause or simply save up for future spending.

Kris Humphries Engagement Ring Cost Comparison

Leonardo DiCaprio recently contributed famous artwork from his collection to Christie's to benefit environmental efforts, and Kim Kardashian also auctioned off a few of her Hermès Birkin bags earlier this spring.

When it comes to cleaning house or banishing old memories, it seems like auctions are the way to go!

Kim Kardashian Engagement Ring Kris Humphries Cost

When E! News contacted Christie's for clarification, the company declined to comment and stated that they have a strict client confidentiality policy.

Do you think Kris Humphries would auction off Kim Kardashian's diamond ring?