FIG. 18 in The exploitation of molluscs and other invertebrates in Alexandria (Egypt) from the Hellenistic period to Late Antiquity: food, usage, and trade

FIG. 18. — Fragments of pearl oyster from: A, 5th-6th century AD levels on Diana Theatre site; B, Late Roman levels on the Billiardo Palace site; C, half-finished mother-of-pearl objects found on the Diana Theatre site. Scale bars: 10 mm.