Among the exceptionally rare coloured diamonds on display in Tokyo, Japan, as part of the Argyle Pink Diamonds Tender 2013 are, left to right, the Argyle Aurelia, Argyle Phoenix, Argyle Seraphina and Argyle Celestial dimaonds.
AN EMERALD AND DIAMOND RING Designed as a pair of twin flowerheads, the petals mounted with marquise-cut diamonds to the circular-shaped emerald centres with tapered baguette-cut diamond shoulders to the plain hoop, with French assay mark for platinum
These two bright yellow diamonds (1.03 and 1.02 ct) are from alluvial deposits in the Zimmi mining area in southern Sierra Leone. In the rectangular stone, several black graphitized feather inclusions are visible. Photo by Robert Weldon.