Welcome toAthens Gem Lab Check your Certificate Useful Information scroll down My son and I have been gemologists since 1998 and 2007, trained in Vienna and Idar Obersteinen, according to: CIBJO guidelines Check your certificate We appraise and assess, according to CIBJO guidelines... all gemstones and jewelry Download a sample certificate In July 2006, after a more than two and a half years of discussions, CIBJO was accepted as a member of ECOSOC, which is the... United Nations Economic and Soc