Television Memorabilia

I am trying to rid myself of a pair of relatively expensive diamond earrings, that were given to me from an ex. I don't particularly care for diamonds, given the nature of the politics surrounding the diamond industry. I would prefer not to sell them via ebay. I was hoping someone could provide information as to where I might sell them, otherwise. I appreciate any assistant anyone can provide. I would like to do so in the Los Angeles area. Thanks again!