2023 Clio production contains a purer colorant than previous production runs. Clio is a color-shifting, reset-reduce glass, that transmits ambers and reds with the reds being more visible under incandescent and sunlight. It develops a strong silver luster and maintains its pearlescence under encasement. Reset-Reduce colors need to be reset in a neutral flame before following the reducing process. See our guide on how to reset. See our Phaeton Tutorial for the best techniques to use with Clio.