The unknown buyer bought the Lorraine Schwartz creation, which features a 16.21-carat center diamond and two 1.8-carat side diamonds for a total of $749,000, which is plus tax.
The amount is a significant drop from the ring's initial reported worth of $2 million.
"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." a source told Us Weekly
"The ring is definitely not worth $2 million, not even half of that," sniffs the source. Indeed, Kardashian, not Humphries, initially paid for the ring herself.