Best place to sell jewelry to get a decent price?

I got a wedding ring with 1.5k diamond and 14k gold and a silver necklace with big cheriote stone. As partial payment for a loan I know $3800 was paid or the ring on clearance and $700 was paid for the necklace I was given reciepts with them. Pawnshops are worthless I'd be lucky to get $150-$200 for them. I'm not trying to get full price or anything for them but I don't want to get ripped off. What might they be worth? And where is the best place to sell them? They are on craigslist now but I don't really know what they are worth to price them properly