3,000 dollar ring to sell? How to go about it online?

I've posted on etsy, craigs and ebay. But so far only idiots who are scamming and hacking, and people offering me much less! I think it could sell but gosh, I really need to sell it and I'm unsure waht to do because this is lower than its value already. It's appraised and very well condition. What can I do online to try and make it more appealing and sell quicker? I do free shipping and long lengthy posts :( great pics.