05/06/2026
Richard Hughes of Lotus Gemology will speak at the upcoming Swiss Gemmological Society Annual Conference, presenting:
⭐ Describing Color in Gems: A Fool’s Guide
The lecture will examine the challenges of applying color descriptors such as “pigeon’s blood,” “Paraíba,” “Santa Maria,” and “cobalt blue” in a consistent and logical way, alongside a discussion of color science and the use and misuse of color terminology within the gem trade.
22-23 June 2026
Swiss Gemmological Society Annual Conference
Thun, Switzerland