27-9-2019
The Gemmological Association of Hong Kong (GAHK), The Gemmological Association of Great Britain (Gem-A) and Informa Markets organised a seminar in celebration of GAHK's 40th anniversary during the September Hong Kong Jewellery & Gem Fair.
Gemmological experts: GAHK honorary chairlady Mimi Ouyang, Swiss Gemmological Institute (SSEF) director Michael S. Krzemnicki, Gemmological Institute, China University of Geosciences (Wuhan) dean Yang Mingxing, Kasetsart University internal consultant Pornsawat Wathanakul, Tongji University professor Qi Lijian and ICA GemLab Bangkok research manager Dietmar Schwarz offered detailed research on Guatemala fei cui, ruby, turquoise, sapphire, freshwater pearl from China and spinel.
Here is abstract of two topics. The Guatemala fei cui is estimated to has less impact on fei cui market, except for middle grade which has bluish and inky green variety as most of the Guatemala fei cui contains grey tone with bluish shade. Customers still need time to learn more about this new source. SSEF explained the distinguish method of coloured gemstones such as ColorCodex and concluded standardisation is essential.
← Back