How Much Did It Cost to Paint a Pompeii Room Egyptian Blue?

"The striking Egyptian blue that covered its walls immediately indicated to archaeologists that the room was not an ordinary domestic space - it likely served as a sacrarium, a shrine where Romans in the household could undertake rituals or store sacred objects. But how much money did these expensive pigments cost wealthy Romans?"

"Blue is a beautiful yet difficult hue to replicate in the natural world. The pigment made from Lapis lazuli was difficult to procure, mined from the far-off mountains of Badakhshan in what is today northeastern Afghanistan. It was (and still is) a precious commodity. Necessity bred innovation in antiquity, which is how Egyptian blue came into being."

"Pigment makers created the color with a mix of heated sand, lime, copper, quartz, and an alkali flux. The artificial blue pigment is attested within Ancient Egypt around 3300-3200 BCE. It later became popular in Anatolia and Mesopotamia. In the first century BCE, the architectural writer Vitruvius noted its existence, as well as the Roman term for it: caeruleum."

A newly excavated blue shrine in Pompeii, dating to approximately 2,000 years ago, contains substantial amounts of Egyptian blue pigment on its walls, indicating it served as a sacrarium for household rituals and sacred object storage. A recent Heritage Science study estimates the cost of covering an entire room with this prized pigment. Egyptian blue, an artificial pigment created from heated sand, lime, copper, quartz, and alkali flux, emerged as an innovation to replicate the rare natural blue from lapis lazuli, which was mined in distant Badakhshan in northeastern Afghanistan. The pigment originated in Ancient Egypt around 3300-3200 BCE and later spread to Anatolia and Mesopotamia. By the first century BCE, Roman architect Vitruvius documented its existence and Roman name, caeruleum, with production occurring in Puteoli near Pompeii.

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