Kris Humphries Auctions Kim Kardashian Ring

Kris Humphries is reported to have sold the engagement ring he gaveKim Kardashian - for less than half the price he paid.

And the basketball star is claimed by E! News to be planning to donate the proceeds of the sale to charity.

He has apparently sold the 20.5-carat ring for $749,000 at a Christie's auction - despite its worth previously being reported at $2m.

A spokesperson for the auction house said: "It bounced between two phone bidders and two bidders in the back of the room.

"Good participation all around. It was the last item in the morning session."

And a rep for Kris told E! News: "Kris is very pleased with the final result. The ring is indeed Kris' property that he received through his marriage dissolution.

"He has long-since moved on and is very much looking forward to returning to the court this upcoming NBA season as a Boston Celtic."