Alumni Chapter

Metro Phoenix Chapter: The “Crossover Gems” presented by John Bradshaw


John Bradshaw will lead us on an exploration of “crossover gems,” those gems that are of interest to the jewelry and the collector markets. Traditionally, sapphire, tourmaline, topaz, and the like are most often seen in the jewelry market, and many “rare” or “non-traditional” gemstones are of low hardness and durability and are confined to the collector’s market. The segment between gems that are collectible, but also have sufficient hardness and durability to be used in jewelry, are called “crossover” gems. Bradshaw will explore these gems, including hard-to-find wholesale pricing of them.

Bradshaw has a B.S. in chemistry from the University of Massachusetts-Boston and was working as an epoxy chemist when he took up gem faceting in 1979. A short time later, he gave up his chemists’ job to become a full time lapidary. He took additional courses in mineralogy and crystallography at Salem State College and became a gemologist, graduating from GIA in 1983.

He was the curator of gemstones at the Harvard Mineralogical Museum for 20 years and helped arrange, design and set up the “Gems” exhibit at Boston’s Museum of Science. He consults for the Smithsonian Institution and is an expert witness in the evaluation of rough tourmaline for the U.S. Department of Justice. He was a member of an investment team involved in re-opening Mt. Mica in Maine (one of the oldest mines in the country) and has worked internationally as a consultant on many projects including work in Pakistan, Central African Republic and Russia. He is a member of AGTA, ICA, Gem-A, JBT and NEJA.

All are welcome to join this event; alumni, students, gem and jewelry industry professionals and enthusiasts. Please share this invitation with others who may be interested in this learning opportunity...


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