" Held captive beneath the translucent skin, the seven colours of the rainbow flickered with some secret fire of their own all over the surface of each precious sphere. Chéri recognized the pearl with a dimple, the slightly egg-shaped pearl, and the biggest pearl of the string, distinguishable by its unique pink. ‘These pearls, these at least, are unchanged! They and I remain unchanged. "

― Colette , The Last of Cheri