Roman Gemstone with Zeus Serapis and Isis
2nd-3rd century A.D. or later. A gem with a representation of Zeus Serapis enthroned, modius on his head, sceptre and eagle by his side, Isis Gubernatrix to his right and Isis sail-bearer to his left, all three figures riding a galley or cargo ship. Cf. Bricault, L., Isis Pelagia: Images, Names and Cults of a Goddess of the Seas, Leiden-Boston, 2020, figs. 75, 78, 80, for similar gemstones. 0.28 grams, 10 mm (3/8 in.). Acquired before 1988.Ex family collection, by descent, Geneva. This triad formed by Serapis and the two aspects of Isis (Gubernatrix and sail-bearer) aboard a ship, appears in several examples of Alexandrian coinage and gemstones. This imagery is linked to the image of Isis, goddess of the sea, and Serapis, god of vegetation and protector of the sailors.