NCDIA to Hold Colored-Diamond Seminar

RAPAPORT... The Natural Color Diamond Association will present a study at the Hong Kong Jewellery & Gem Fair on how coloring in diamonds develops.  Since 2009, GGTL Laboratories in Liechtenstein has beenanalyzing both natural and lab-grown diamonds. The results will be given bylaboratory director Thomas Hainschwang (pictured), in a seminar moderated by Rapaport senior news reporter Joshua Freedman. The presentation will take place at the Asia Word Expo inHong Kong on September 17. Image: Polished natural colored diamonds. (Alrosa)