Fig. 4From: Funerary colors in Pre-classical Maya culture: the red pigment in the 19th tomb of Rio Azul (Peten, Guatemala)Vis spectra of samples: a 1 and b 2 are presented as continuous lines. Spectrum of iron oxide red (dotted line) and vermilion (dashed line) (both supplied by Kremer pigmente©) are also showed in bBack to article page