The Other Big Three

This presentation shines a spotlight on The Other Big Three coloured gemstones: tanzanite, aquamarine, and tourmaline. Each has its own story to tell, from dazzling hues and distinctive characteristics to fascinating origins and the role they play in today’s market.

We’ll explore their beauty, treatments, and varieties, as well as the factors driving demand and the challenges of imitations. Whether you’re a gem professional or an enthusiastic collector, this session offers a clear and comprehensive overview of why these gems have earned their place alongside ruby, sapphire, and emerald.

Charlotte is a GIA Graduate Gemologist® and began her career in the industry working in fine jewelry merchandising for high-end department stores, and luxury retail avenues. This involves working with multiple brands globally and acquiring and curating collections for jewelry houses. Charlotte has also acquired her FGA from the Gemmological Association of Great Britain, and in 2024, joined the GIA London team as a gemology instructor.