Dumortierite - PL spectra Dumortierite Index IR-Reflectance Photoluminescence UV-Vis-NIR Dumortierite: Slightly-violetish-blue dumortierite – 0.42 ct – Sahirina, Madagascar Slightly-violetish-blue dumortierite – 0.42 ct – Sahirina, Madagascar 460 nm: TiO68- complexes replacing AlVI3+
