What’s the best place to buy vintage jewelry online?

I cannot really say whether it’s the very best place to buy vintage jewelry, but I have bought a few really great pieces from vintagehoneypots on ebay.de
I remember one sterling silver ring with diamonds (14K gold plated) and one very impressive size jadeite jade pendant especially well. I succeeded to resell them at a very good profit (10 and 19 times more than what I paid for these items). So, you can find some pretty good deals there from time to time. I think it really depends on what you are looking for.

Best regards, Freddie