IMPORTANT ROMAN INTAGLIO on cabochon rock crystal mounted on a yellow gold swivel ring. Dolphin and sea anchor. In the field, a retrograde inscription in ancient Greek "ΕΠΙΤΥΝΧΑΝΟΥ", meaning faith in a promise whose future fulfilment is hidden. For a similar gem, see the one on jasper in the British Museum, 1856,0425.16. For a similar iconography, see SPIER J. Late Antique and Early Christian Gems, nos. 261 and 302. The choice of rock crystal refers to the purity of the water and the symbolism of faith in what is to come. Intaglio 18 x 20 x 8 mm; TDD 59; 18 g Intaglio, Roman art 3rd-4th century 20th century setting An Large Roman Christian rock crystal intaglio mounted in a 20th century gold swivel ring. Dolphin and sea anchor. In the field, retrograde inscription in ancient Greek "ΕΠΙΤΥΝΧΑΝΟΥ", meaning faith in a promise whose future fulfilment is hidden. For a similar gem see the intaglio on red jasper from the British Museum, 1856,0425.16. For similar iconography, SPIER J., Late Antique and Early Christian Gems, n°261 and 302. The choice of rock crystal refers to the purity of water and the symbolism of faith in what is to come. 3rd-4th Century A.D.