News Earth Gemstone Geography: New technique discerns emeralds’ beginnings Share this:FacebookTwitterPocketRedditPrintEmail By Alexandra Goho December 10, 2003 at 10:21 am This article is only available to Science News subscribers. Subscribers, enter your e-mail address to access our archives. Client key* E-mail* Log in Not a subscriber? Science News is a nonprofit. Support us by subscribing now. Subscribe