Diadema

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Diadema referred

  • a city in the Brazilian state of São Paulo, see Diadema (Brazil)
  • the genus of the diadem sea urchin, see Diadema (genus)
  • in antiquity the headband or headband worn by the ruler, see diadem
  • a Costa Crociere cruise ship that entered service in 2014, see Costa Diadema