Fei Cui Global Supply Chain Research – Update
During the Christmas to New Year 2024/2025 period and throughout 2025, the Guild Field Expedition Team traveled to Fei Cui producing areas and market...
Determination of Emerald Origin Through the Identification of Solid Inclusions
Introduction
The study of solid inclusions (Figure 1) remains one of the most relevant sources of information for determining the geographic origin of gemstones. The...
Amethyst’s Regal Allure
Re-visiting a gemstone that has been in the jewelry world for hundreds of years—and written about many thousands of times—can be a daunting task....
Rediscovering Spinel: A Legacy Reborn
There is a quiet poetry to spinel—a gemstone that has adorned the crowns of kings, yet spent centuries living under another’s name. In the...

















