William R. (Bobby) Mann, GG (GIA), PG, is co-founder of the International Ivory Society (1996) and a collector of unusual ivories, tusks, teeth, skulls as well as natural and manufactured look-alikes. He has the largest collection of natural ivories, natural and manufactured look-alikes available for hands-on teaching. Since 1996 he has been teaching ivory identification through his talks, seminars and hands-on workshops. Bobby is also the manufacturer of Ivory I.D. comparison kits. Bobby is a Graduate Gemologist (GIA) (1982), a (PG) Professional Gemologist Columbia School of Gemology (1983) a...