About the Author
Stephen Hofer began his career in the earth sciences in 1976 as a geophysicist at the University of Connecticut. He studied gemology at the Gemological Institute of America (GIA) and the gemmological Association of Great Britain (GAGB), graduating with distinction.
In 1979 he accepted a position with the GIA Research Department, and since then he has devoted his career to the study of colored diamonds. In 1985 he became president of Colored Diamond Laboratory Services (CDLS), and currently operates a consulting service to the diamond industry.
He has lectured extensively on the subject of colour in diamonds, was one of sixty featured speakers at the 1981 International Gemological Symposium, has published numerous technical papers, and authored a quarterly column on coloured diamonds for New York Diamonds magazine. Mr. Hofer is an accomplished diamond cutter and a graduate of the American Institute of Diamond Cutting (AIDC).