Hackman is President of the International Colored Gemstone Association (ICA) and managing director of Intercolor USA. He holds a Master’s degree from University of Missouri, Columbia, USA.
Hackman has been a partner at the New York-based Intercolor USA since 1978 and a partner at the Arusha-based Signature Gems since 2010, both specializing in tanzanite.
Hackman has been a member of ICA since 1984 and served two terms in the ICA board.
He is also a member of several organizations serving the trade in the United States including three terms as AGTA board members and treasurer plus one term as president.