Progress in harmonising report nomenclature: LMHC
Nomenclature for gem colour stability, tanzanite, cobalt spinel & jade The Laboratory Manual Harmonisation Committee (LMHC) has reported significant progress towards its goal of achieving the harmonisation of language used on gemmological reports, following its latest meeting, which was hosted by the Swiss Gemmological Institute – SSEF, in Basel, Switzerland, in May. Following the meeting, LMHC members unanimously approved three new information sheets that standardise terminology and testing procedures, and they also updated the information sheet covering Fei Cui and jade terminology. All the new and updated information sheets can now be accessed on the LMHC website. The LMHC is currently comprised of representatives from the Central Gem Laboratory (CGL), CISGEM Laboratory, DSEF German Gem Lab, GIA Gem Laboratory, The Gem and Jewelry Institute of Thailand (GIT), Gübelin Gem Lab Ltd., and the Swiss Gemmological Institute – SSEF. The committee plays a centr...