Jeweler's Resource: A Reference of Gems, Metals, Formulas and Terminology
"I have received a copy of your book "Jeweler's Resource" and I am  very impressed with the quality of information as well as the quality  of the book itself."  --Steve Smith, S.V. Smith Research Co. Hartsville, S.C."My Friend David at the Point Reyes Jeweler just called to  find out if I knew the U. S. equivalent of Japanese ring  sizes. Luckily I have a copy of "Jeweler's Resource." This wonderful  book contains hundreds of facts and formulae for jewelers and  gemologists, including the information I needed to answer David's  question." "Browsing its pages is an excursion down the road towards a  more complete understanding of jewelry and gemology."  --"Jewelers' Circular-Keystone," March 1996, Alan Revere, Revere Academy of Jewelry Arts, San Francisco