General Questions:
1-800-421-7250
With the growing availability of laboratory-grown diamonds in the marketplace, full disclosure and confidence in knowing what you are buying is now more important than ever. GIA has developed a sophisticated and easy-to-operate desktop instrument to screen for these stones.
Read More
GIA’s current distinguished research fellow has represented the Institute’s gemmological excellence around the world for the past four decades.
Read MoreDeveloped by the Harvard Business School (HBS), the programme focuses on new research and best practices to deliver practical value and actionable techniques. Participants learn using the HBS case-study method, drawing on Harvard’s vast repository of business intelligence. Interactive lectures and small study groups ensure lively, thought-provoking discussions and innovative ideas.
Read MoreFind out more about the GIA Melee Analysis service and how to submit stones for analysis and sorting.
Read MoreThis article, from the Spring 1994 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
Read More
Emerald is the green to greenish blue variety of beryl, a mineral species that also includes aquamarine as well as beryls in other colours.
Read More
