OK, from the awesome link that Rachael provided I ended up surfing around on Opus Interrasile and found a couple of interesting sources. The Met itself sells reproduction jewelry, if you surf their store you can find some awesome (if expensive) stuff. One that I thought might be within reach for some people is Here
Now, that is a little steep so I also found some not so perfect reproduction stuff that still looks pretty good Here at a cheaper price.
I am fascinated by the jewelry and the Rock Crystal pieces that are on the Met site. Now to figure out how to do it.