Dr. Juzi Li - Gemmological Institute, China University of Geosciences, China
Dr. Juzi Li is a professor at Gemmological Institute, China University of Geosciences (Wuhan). He holds an M.S. in gemmology from that university as well as a Ph.D. in gemmology (with a concentration in precious metals) from China University of Geosciences (Beijing). He was a visiting scholar at the University of Alabama, USA, from January 2014 to November 2015. He is the author of 20 papers and four books and has hosted ten scientific projects concerning jewelry. His interests focus on precious metals, jewelry-making technology and gemmology. Juzi is a Certified Gemmologist of China and Certified Public Valuer (Gems) of China. This is his third presentation at the Santa Fe Symposium®.
Tarnish-Resistant Sterling Silver for Filigree
The technique of filigree has been used in making jewelry since 3000 B.C. Filigree jewelry is still very popular not only in Europe but also in Asia because of its special decorative effects. Fine silver may be the most popular fine metal for filigree because of its comparatively low price and its excellent mechanical properties, such as easily bent to make different patterns. However, fine silver tarnishes readily, which negatively affects the appearance of the jewelry. A new silver alloy has been developed which has similar mechanical properties and better resistance to tarnish, making it better for filigree jewelry. This paper will present the structures and mechanical properties of the new silver alloy and how it is applied to making filigree jewelry. Several pieces of this jewelry will be exhibited.