Zoisite - UV-Vis spectra Zoisite Index IR-Reflectance Photoluminescence UV-Vis-NIR Pink: Pink zoisite var. thulite – 0.97 ct – (Merelani), Tanzania Pink zoisite var. thulite – 0.97 ct – (Merelani), Tanzania All bands are related to Mn3+ except 620 nm assigned to V3+