Purpurin (Italian: Porporino; Latin: Haematinum, derived from Greek haimátinos = "of blood"; German: Hämatinon), sometimes referred to as glass porphyr...

madder plant Purpurin (protein), a protein, belonging to the lipocalin family Purpurin (glass), a red or reddish-brown ancient type of glass Purpurine,...

goldstone has macroscopic reflective crystals; purpurin glass has microscopic opaque particles; copper ruby glass has submicroscopic transparent nanoparticles...