Callais: How an Ancient Pigment Shaped Global Art and Trade
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Callais: The Ancient Pigment That Shaped Art and Trade</title> </head> <body> <article> <h1>Callais: The Ancient Pigment That Shaped Art and Trade</h1> <p>In the annals of art history and archaeology, few substances have left a mark as enduring—or as colorful—as callais. This rare blue-green pigment,…