CIBJO releases Gemmological Special Report, considers process of separating measurable facts from opinion
With fewer than four weeks to go to the opening of the 2019 CIBJO Congress in Manama, Bahrain, on November 18, 2019, the seventh of the CIBJO commissions’ Special Reports has been released. Prepared by the CIBJO Gemmological Commission, headed by Hanco Zwaan, it considers measures that should be taken to ensure that a person reading a laboratory report understands what information is measurable fact and what information represents the opinion of the gemmologist.









