Kim Kardashian's ex-husband is reportedly auctioning off her 20-carat diamond engagement ring.
Basketball player Kris Humphries -- who infamously split from the 'Keeping Up with the Kardashians' star after just 72 days of marriage in October 2011 -- has listed the lavish jewellery for sale at Christie's auction house in New York City, where it is expected to be sold on Oct. 15.
While the auctioneer has refused to confirm the name of the owner, they did reveal it was "a gentleman" and the dimensions of the ring are an exact match to that of Kardashian's custom-made Lorraine Schwartz engagement trinket, which boasts a 16.21-carat centre diamond and two 1.80-carat side diamonds.
A source told UsMagazine.com: "It is 100 per cent the same ring. Kim has been waiting for the day he would auction it. 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."
The pricey band is expected to fetch between $300,000 and $500,000 at auction, but the six-figure sum is a far cry from the $2 million the ring was said to be worth when Humphries, 28, proposed to Kardashian in May 2011.
Kardashian, 32, tied the knot with the basketball player in August 2011, but the couple's short-lived marriage ended just three months later.
The reality TV star is now a proud mom to three-month-old North, her first child with current boyfriend, rapper Kanye West.
