Porphyry Sarcophagus of Saint Helena

Quarried in Egypt and reserved for emperors, porphyry signaled rule. This colossal sarcophagus—linked to Helena, Constantine's mother—shows Roman horsemen trampling enemies in triumphal reliefs. The message is imperial, even if the occupant was a Christian matron: victory, eternity, and family prestige. In the Greek Cross Hall, its dense red mass anchors the room and the story of how early Christian Rome still spoke the language of empire.