"en:Image:Natural_ultramarine_painted.jpg" at en:Wikipedia at 08:42, 5 September 2004. The original comment is "Image of natural Ultramarine pigment, prepared...
Edward Armstrong - Nathaniel Rogers (page 177 crop).jpg...
uniform dark background we see today. The blue turban itself is painted in natural ultramarine, a fabulously expensive pigment made from crushed lapis lazuli...
