http://www.igioiellidirossana.com/
This is a laboratory-store that designs and sells only their own production. The jewelry is entirely handmade. Their creations are notable for lovely design, beautiful gems and excellent craftmanship.
Ganoksin
The gem and jewelry world's foremost information resource on the Internet. Open to the public, free of charge - a substantial library of articles, publications, reports and technical data on gem and jewelry related topics; as well as a sizable collection of art and jewelry galleries, for both the casual visitor and the professional.
http://brainpress.com/Foldforming.html
Fold forming is a technique developed principally by Charles Lewton-Brain in the mid 1980's. It is a modern prcedure and a revolutionary method of metalsmithing. The extraordinary volumes produced with the fold forming technique yield striking and visually intriguing forms.