Jewelry for my Goddess?

I was wondering if anyone knows of a sight that is good for some type of necklaces or jewelry for my Goddess to wear when she is dressed up for a scene. Obviously normal jewelry would work but i thought there might be something more ornate or devious looking out there but haven't really found anything. If anyone has any ideas at all, i would appreciate hearing it. Also, i dont know if there are many sources for collars of some sort for the Domme to wear, but that might be nice too. She has one with small spikes already. Thanks!