Crystal Harris has put her engagement ring from Hugh Hefner up for sale at Christie's auction house in New York.
The blonde beauty called off her marriage to the 85-year-old Playboy founder just days before it was due to take place in
June, and has since listed her 3.39 carat circular-cut diamond with a guide price of between $20,000 and $30,000.
A source said Crystal, 24, "couldn't bear to look at the ring anymore because it brought back bad memories".
The lot description on the website christies.com reads: "A diamond ring. Set with a circular-cut diamond, weighing approximately 3.39 carats, to the circular-cut diamond hoop, mounted in platinum."
Hugh -- who has been married twice previously -- let his former fiancee keep her engagement ring, because he doesn't believe she was "faking" her feelings for him.
He said: "I truly didn't see it coming. I think an argument could be made that she took me for a ride, but I must say, quite frankly, it was a pretty nice ride.
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"If she was faking it, she did it very well. If you're looking for an explanation about Crystal, I don't have a clue. I don't really feel bitterness. I think I screwed up with us."