A flat lay of around thirty rough, unpolished mineral specimens arranged neatly on a black background. The rocks vary in size and shape and display a wide range of colours, including turquoise, teal, deep blue, pale green, white, pink, purple, yellow, orange, and metallic gold. Some pieces appear crystalline or granular, while others are more solid and blocky, highlighting the varied textures and natural forms of the minerals.

Mineral and Earth Pigments in Art and Architecture - Public Lecture

Earth and mineral pigments are natural colourants derived from minerals with a strong body colours. These pigments are created by grinding minerals into fine powders, typically producing stable, lightfast colours when mixed with a binding medium to produce paints. From cave paintings to contemporary art, earth and mineral pigments have contributed significantly to historical visual culture and they remain relevant in conservation, archaeology, and fine art up to the present day.

This Public Lecture will take place on Tuesday 21 July 2026.

This is a hybrid event, which can be attended in person at Burlington House, Piccadilly, London, or online via Zoom.

17:30–18:00: Guests arrive for the Public Lecture. Refreshments served in the Lower Library.

18:00–19:00: Talk takes place (including Q&A)

19:00-20:00: Drinks reception in Lower Library

20:00: Event end

Dr Ruth Siddall

Dr Ruth Siddall is a geologist and materials scientist whose work explores the intersections of Earth sciences, art, archaeology and cultural heritage. She specialises in the study of minerals, rocks, pigments, ceramics and historic building materials. Ruth is recognised for her expertise in pigment analysis and is co-author of The Pigment Compendium: A Dictionary of Historical Pigments.

This lecture is free to attend.

You can register for both in-person and virtual attendance by clicking on the Book Now button above.

If you wish to join our mailing list, please email conference@geolsoc.org.uk.