The Tyrian purple dye block discovered during an excavation of a Roman bath in Carlisle, northern England, is a rare and valuable find. This solid sample of the highly sought-after dye was produced from thousands of sea snails living in the Mediterranean region.
Tyrian purple was first produced by the Phoenicians in the 2nd millennium BC, making it one of the oldest known artificial pigments. This dye was created in Tire, Lebanon, and other Mediterranean areas and was highly valued for its ability to produce vibrant shades of purple.
Frank Giecco, an archaeologist with mining consultancy Wardell Armstrong, described Tyrian purple as the most expensive and sought-after color in the world throughout history. Its rarity made it reserved only for use by the upper class in Roman times.
Sarah Irving from Cumberland Council collaborated on the excavation project and suggested that this dye sample may have been used to paint frescoes on walls or ceilings. The discovery provides insight into the intricate process of creating this highly valued pigment in ancient times.
