Vide Georges-1913; Plinius, naturalis historia 36,57: rubet prophyrites in eadem Aegypto; forse etiam Porphyrites, -is, cf. ibidem 36,88: intus columnae porphyrite lapide. - Adiectiva: porphyritis, -idis (Georges-2013) et porphyreticus (Historia Augusta, Antoninus Pius 11,8).
