All Authors

John Pollard

John Pollard holds degrees in gemology, education, science and music from the Gemological Institute of America, Washington State University, Peninsula College and the Texas State Board of Education. He is the United States Executive for "Crafted By Infinity" diamonds and a regular consultant for diamond manufacturers, laboratories and sellers in the United States, Europe and Asia. A recognized authority on the global diamond trade, cut quality improvement and e-commerce, Mr. Pollard has been invited to speak for the JCK Convention in Las Vegas, the American Gem Society, GIA Alumni Association, IGI Seminars in Shanghai and Beijing, China, and Polygon's USA Conclaves, among other industry association classes and workshops. He has served as a reviewer for GIA's Gems & Gemology Magazine, the AGS Laboratories' Brand Project and numerous private publications and projects.

Bruce Harding

Amateur gem cutter - EFMLS Lapidary Award 1975.Mechanical design engineer/mathematician. Completed all GIA & GAGB gemological courses 1974-80. Author: "Faceting Limits", Gems & Gemology, 1975, and "Diamond Design Revisited", now at Octonus website. Presenter at Diamond Cut Conference, Moscow, 2004.

Johnny S. Thompson

We have jam every other day. We had jam yesterday, we'll have jam tomorrow, but we never have jam today. - Louis Caroll

Bill Bray

Bill is a diamond cutter with thirty years of experience. He was formally trained in the only accredited trade school at the time, the American School of Diamond Cutting. He was one of only a few who completed the three one year courses. He is a college graduate and has launched his W.R.Bray Cut Scoring System for Modern Brilliant Cut Diamonds (patent pending) also known as BrayScore®. He is a frequent contributor on the Polygon Trading Network. He has been a self-employed diamond cutter since 1977.

Peter Yantzer

Executive Director, AGS Laboratories and Gemological Sciences

AGS Laboratories