Color types such as "pigeon's blood," "cobalt blue" and "Santa Maria" are wildly popular, but also wildly inconsistent.
Describing Color in Gems | A Fool's Guide
by Lotus Gemology's Richard Hughes
Color types such as “pigeon’s blood,” “Paraíba,” “Santa Maria” and “cobalt blue” have become wildly popular in the gem trade. But there is a vast difference between coining such terms and applying them in a way that is both consistent and logical. In this lecture Richard Hughes will give a short tutorial on the fundamentals of color science and then cast a critical eye on the use of color types for faceted colored gems, demonstrating why they cannot be applied with any sort of consistency and also discussing the abuse of such terms by labs and dealers alike.
When
Tuesday, 4 March 2025, 15:00–16:00
Where
Hong Kong International Diamond, Gem & Pearl Show
AsiaWorld-Expo (AWE)
Hong Kong