Colombia supplies two-thirds of the world's emeralds, prized for their distinctive deep green glow. Take designer Lorraine Schwartz's gobstopper Colombian drop earrings worn by Angelina Jolie to ...

Colombian emeralds are said to be the purest, with the most vivid green colour.” Miracles of nature, emeralds require an almost impossible set of circumstances to be formed. “A 30-tonne ...