CIBJO releases Gemmology Commission’s Special Report, looking at how labs should act when evidence of treatment is not definitive
With fewer than four weeks to go to the opening of the 2017 CIBJO Congress in Bangkok, Thailand, on November 5, 2017, the sixth of the CIBJO commissions’ Special Reports has been released. Prepared by Hanco Zwaan, President of the organisation’s Gemmology Commission, the report looks at a series of issues on the agenda of the gemmological community, including guidelines for colour terms like “royal blue” and “pigeon blood red,” and the way in which possible undetermined treatments can be explained on laboratory reports.