A blue pigment originally made from ground lapis lazuli. Web resource here. Videos here and here.
Giotto. Ceiling of the Scrovegni Chapel, Padua (detail). Fresco. 1305-1306. The blue is ultramarine.
A blue pigment originally made from ground lapis lazuli. Web resource here. Videos here and here.
Giotto. Ceiling of the Scrovegni Chapel, Padua (detail). Fresco. 1305-1306. The blue is ultramarine.