Rough Diamond Grading
is the only laboratory in North America that grades rough
diamonds. Its Mineralogical and Rough Diamond Department
is comprised of experts in the grading and classification
of rough diamonds. EGL USA Press will publish The Morphology
of Diamond Indicator Minerals by Valentin Afanasiev, a
leading authority on the subject, later this year..
EGL USA gemologists have lectured on rough diamonds at the
New York Diamond Dealers Club and offer seminars to the international
trade on request.