The International Colored Gemstone Association (ICA) is hosting its 16th biennial Congress in the island paradise of Colombo, Sri Lanka from May 16-19 2015. Three full days of immersion into the wide…
The International Colored Gemstone Association (ICA) is hosting its 16th biennial Congress in the island paradise of Colombo, Sri Lanka from May 16-19 2015. Three full days of immersion into the wide…