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Sarcophagus of Helena. The Sarcophagus of Helena is the red porphyry coffin in which Saint Helena, the mother of emperor Constantine the Great, was buried (died 329).The coffin, deprived of its contents for centuries, was removed from the Mausoleum of Helena at Tor Pignatarra, just outside the walled city of Rome.
On its erection, the column was 50 meters tall, constructed of several cylindrical porphyry blocks. The exact number of porphyry blocks is disputed, but common figures range from seven, up to as many as eleven. [3] The column was surmounted by a statue of Constantine, probably nude, wearing a seven-point radiate crown and holding a spear and orb.
Carmagnola or la Carmagnola is the traditional name of a porphyry head of a late Roman emperor, widely thought to represent Justinian, now placed on the external balustrade of St Mark's Basilica in Venice.
Porphyry bust of Emperor Galerius. Constantine had returned to Nicomedia from the eastern front by the spring of 303, in time to witness the beginnings of Diocletian's "Great Persecution", the most severe persecution of Christians in Roman history. [61]
"Imperial Porphyry" from the Red Sea Mountains of Egypt A waterworn cobble of porphyry Rhyolite porphyry from Colorado; scale bar in lower left is 1 cm (0.39 in). Porphyry (/ ˈ p ɔːr f ə r i / POR-fə-ree) is any of various granites or igneous rocks with coarse-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate-rich, generally aphanitic matrix or groundmass.
The paired statues stand on plinths supported by a console of the same stone, and their backs are engaged in the remains of large porphyry columns to which the statues were once attached, carved all of a piece. [1] The columns no longer exist, and one emperor pair is missing part of the plinth and an emperor's foot, which has been found in ...
Constantine VII Porphyrogenitus (Ancient Greek: Κωνσταντῖνος Πορφυρογέννητος, Kōnstantinos Porphyrogennētos; 17 May 905 – 9 November 959) was the fourth Byzantine emperor of the Macedonian dynasty, reigning from 6 June 913 to 9 November 959.
The porphyry statue of Diocletian in armour is known from large fragments that existed at the column's foot in the eighteenth century AD. From the size of a 1.6 m (5 ft 3 in) fragment representing the thighs of the honorand, the original height of the loricate statue has been calculated at approximately 7 m (23 ft). [1]