AN IMPORTANT COLOURED DIAMOND AND DIAMOND BROOCH/PENDANT DESIGNED AS A MARQUISE-CUT DIAMOND FOLIATE CLUSTER, SUSPENDING A PEAR-SHAPED FANCY LIGHT BROWNISH GREENISH YELLOW DIAMOND WEIGHING 26.75 CARATS, MOUNTED IN 18K GOLD, 6.0 CM LONG
Calcite with quartz from Huanggang Mine, Inner Mongolia, China. The pictured specimen is 7cm tall. The quartz at the center of the stacked calcite disks is better exposed in some of the specimens that they have at the show. Photo credit: Jeffrey A. S