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Historical Archive: Porphyry undated Roman vase: Eagle of Suger, porphyry/silver gilt, Île-de-France bef. 1147, Louvre MR 422, which has its own page Harpocrates, porphyry, 2nd c. Carthage, KM 0000.00.7023 Harpocrates, porphyry, 2nd c. Carthage, KM 0000.00.7023 2nd c. porphyry columns: Lateran Baptistery, Rome. This work has its own exterior page. porphyry columns, 2nd c.? Lateran Baptistery, Rome, octagon, 432-40 and later. The baptistery octagon and narthex have their own interior page. barbarian prob. fr. sarcophagus Helena, slight angle from below, porphyry, 4th c., V&A A.102-1956 barbarian prob. fr. sarcophagus Helena, greater angle from below, porphyry, 4th c., V&A A.102-1956 barbarian prob. fr. sarcophagus Helena, profile, porphyry, 4th c., V&A A.102-1956 Porphyry sarcophagus of Helena (d. c.330), 1st third of 4th c., Vat 238. This work has its own page. Tetrarchs, porphyry, c.305, San Marco, Venice. This work has its own page. Porphyry sarcophagus of Constantina (d.354), c.330-65, Vat 237. This work has its own page. tub/sarcophagus of Theodoric, porphyry, early 6th c.?, Mausoleum of Theodoric, Ravenna side of tub/sarcophagus of Theodoric, porphyry, early 6th c.?, Mausoleum of Theodoric, Ravenna hand with wreath or ring, tub/sarcophagus of Theodoric, porphyry, early 6th c.?, Mausoleum of Theodoric, Ravenna Portable altar of Countess Gertrude, c.1045, CMA 1931.462. This object has its own page. columns: Giovanni Pisano pulpit 1302-10, which has its own page, in Pisa cathedral opus sectile, prob. 1890s, in Ravenna, Orthodox baptistery, which has its own pages with other views.