Cancrinite group - PL spectra Cancrinite group Index IR-Reflectance Photoluminescence UV-Vis-NIR Afghanite: Blue afghanite – 0.32 ct – Afghanistan Cancrinite-Vishnevite: Yellow cancrinite – 43.94 ct – Kola Peninsula, Russia Blue afghanite – 0.32 ct – Afghanistan Yellow cancrinite – 43.94 ct – Kola Peninsula, Russia