【USA】GIA to Discontinue 4Cs Grading System for Lab-Grown Diamonds
Editor’s NoteThe GIA’s decision to stop grading lab-grown diamonds using the 4Cs system marks a pivotal step in distinguishing them from natural…
GIA
【Panjshir Val】Science | Afghanistan’s Panjshir – The Legendary Emerald Origin Shrouded in Mystery
Editor’s NoteThis article explores the storied origins of Afghanistan’s Panjshir emeralds, gems of exceptional quality born from a valley whose name…
【USA】US Tariffs Impact International GIA Services
Editor’s NoteThe GIA has temporarily suspended sending diamonds from international locations to its U.S. labs for processing. Clients are advised to…
Science Popularization | April Birthstone – Diamond
Editor’s NoteThis excerpt traces the diamond’s journey from ancient Indian riverbeds to its status as a symbol of European aristocracy, highlighting…
Science Popularization | How Much Does Origin Affect Gemstone Prices?
Editor’s NoteThis article explores a fundamental principle in gemology: how a stone’s geographic origin can dramatically influence its market value,…
【USA】Analytical Techniques in Gemology: A Historical Overview
Editor’s NoteThis special issue of *Gems & Gemology* explores the sophisticated instrumentation used in modern gemology. As the field grows…
【Shenzhen, Ch】The Third GUILD x GEMFIELDS Aurora Borealis International Jewelry Design Competition Concludes Successfully!
Editor’s NoteThis article highlights the 2024 GUILD x GEMFIELDS Aurora Borealis International Jewelry Design Competition, an event celebrating the…
Laboratory-Grown Diamonds: An Update on Identification and Products Evaluated at GIA
Editor’s NoteThis article provides a comprehensive overview of the rapid evolution of laboratory-grown diamonds over the past two decades, charting…
【Antwerp, Bel】Diamond Certificates: Papers for Secure Value
Editor’s NoteThis article highlights the critical importance of independent gemstone certification from major laboratories like GIA, HRD, and IGI in…
【USA】GIA Takes Steps to Counter Fraudulent Inscriptions on Lab-Grown Diamonds
Editor’s NoteIn response to a rise in fraudulent inscriptions on lab-grown diamonds, the Gemological Institute of America (GIA) is launching a…