Ultramarine
Ultramarine
Ultramarine was the Renaissance's most precious pigment—more expensive than gold. This deep celestial blue was ground from Afghan lapis lazuli, traveling the Silk Road to Italy. Renaissance painters reserved ultramarine for the Virgin Mary's robes—symbolizing heaven and purity. Michelangelo couldn't afford it and left "The Entombment" unfinished. Contracts had "ultramarine clauses"—clients paid separately for the pigment. Only after 1828, when synthetic ultramarine was invented, did this "blue of heaven" become accessible.