Press Release

In Memoriam: GIA Governor Dr. Rodney Ewing


Dr. Roderick Ewing, a member of the GIA Board of Governors from 2006 to 2015, passed away earlier this month at age 77.
Rodney C. Ewing, pictured during his tenure as a member of the GIA Board of Governors.

Noted scientist served the Institute from 2006 to 2015

CARLSBAD, California – July 24, 2024 – Dr. Rodney Ewing, a member of the GIA Board of Governors from 2006 to 2015, passed away earlier this month at age 77. 

“Rod Ewing exemplified the high caliber and deep expertise in science, research and academia of the many scientists who serve on the Institute’s Board of Governors, helping to strategically guide the Institute,” said Susan Jacques, GIA President and CEO. “He was very supportive of the Institute’s gemological research and encouraged the establishment of the Richard T. Liddicoat Postdoctoral Fellowship program, which helped expand GIA’s research capabilities.” 

Dr. Ewing’s more than 50 years of contributions to science earned many awards and much recognition. He was a member of the U.S. National Academy of Engineering, a foreign fellow of the Royal Society of Canada and received the Lomonosov Gold Medal of the Russian Academy of Sciences. In 2017, the most complex mineral then known was named in his honor – ewingite. 

Dr. Ewing planned to retire later this year from his position as a professor in the department of geological and environmental sciences at the School of Earth Sciences at Stanford University. He served on 13 National Research Council committees, served two terms on the Board of Nuclear and Radiation Studies and chaired the Nuclear Waste Technical Review Board under President Barack Obama. In 2015, Dr. Ewing was honored with the International Mineralogical Association’s Medal of Excellence in Mineralogical Sciences and the American Geosciences Institute’s Medal in Memory of Ian Campbell for Superlative Service in the Geosciences.


About GIA

An independent nonprofit organization, GIA (Gemological Institute of America), established in 1931, is recognized as the world’s foremost authority in gemology. GIA invented the famous 4Cs of Color, Clarity, Cut and Carat Weight and, in 1953, created the International Diamond Grading System™ which is recognized around the world as the standard for diamond quality.

Through research, education, gemological laboratory services and instrument development, the Institute is dedicated to ensuring the public trust in gems and jewelry by upholding the highest standards of integrity, academics, science and professionalism.