Phenakite group - UV-Vis spectra Phenakite group Index IR-Reflectance Photoluminescence UV-Vis-NIR Phenakite: Colorless phenakite - 0.50 ct - Unknown locality Eucryptite: Gray eucryptite/albite – 1.56 ct – (Londonderry, Nepean, Coolgardie), Australia Willemite: Very-light-yellow willemite – 0.42 ct – Franklin, New Jersey, USA Colorless phenakite - 0.50 ct - Unknown locality No spectrum Gray eucryptite/albite – 1.56 ct – (Londonderry, Nepean, Coolgardie), Australia Very-light-yellow willemite – 0.42 ct – Franklin, New Jersey, USA
