Pragmatic Spectroscopy for Gemologists, followed in 2000 and 2011, respectively. His course Diamond Cut Grading Simplified can be viewed on the Canadian Institute of Gemology’s website.
In 2018, he received the Antonio C. Bonanno Award for Excellence in Gemology from the Accredited Gemologists Association (AGA).
“Dr. Hanneman has dedicated decades to providing gemologists with practical solutions to many of gemology’s big challenges,” said AGA president Stuart Robertson at the time. “It would be difficult to think of anyone more deserving of this recognition.”
He also received the International Society of Appraisers’ Industry Service award.
Hanneman’s comments on the world of gemology were often blunt and to the point. “Every diamond in every jewelry store, under the bright lights of the sales counter, looks good to someone,” he wrote in his cut grading course. “If it is pretty, you like it, and the price is right, buy it.”