Bill Lieberum, Internet ‘Rockdoc, Dies

William R. “Bill” Lieberum, better known to habitués of Polygon and PriceScope as “Rockdoc,” died June 20 at the age of 57. Lieberum was a Gemological Institute of America graduate gemologist, a former American Gem Society retail store owner, and certified gemologist appraiser. Lieberum once wrote that he became a gem enthusiast after “having bought some diamonds for investment, and got stones that graded lower than the seller represented them to be.” “Bill was a good guy,” writes Dave Atlas, president, D. Atlas & Co., and Accredited Gem Appraisers in Philadelphia. “I don't know a whole lot about his early family life, but it must not have been easy. He graduated from a privately endowed school in Philadelphia, Girard College, named after its benefactor, Stephen Girard. This school takes in orphans and fatherless boys into its care for their secondary education
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