3D jewelry from silver or gold, has anyone done?

Sometime ago i made an inkscape drawing of necklace i wanted made and got it done based on my drawing from silver, the final was hand made. well now i want to move one level further on an other gift and model a closed mesh to be replicated in silver or gold for gift, a necklace but i dont know where to send the file and to have it processed/made.
Maybe this is something very expensive,i know from some polymer this wouldnt cost very much i guess. well would be cool to know… I will write here if i figure this out before anyone has an answer, i mean how to process necklace from silver

:(hmm googling… looks like i would be better of wanting to make a piston, but that wouldnt make a nice necklace… :smiley:

Maybe here…
http://www.gemvision.com/index.html