May birthday babies will be green with envy scrolling through @muzoemeralds. The International Emerald Exchange lets you virtually visit the emerald region of Boyacá, Colombia, and follow the stunning stones on their mine-to-market journey.   (Inset) A 4.72 ct. heart-shape gem Workers at La Pita mine 22 cts. t.w. emeralds! 2,712 cts. t.w. rough Ready for cutting/polishing One of IEE’s mining sites