Gold and carnelian, 2.28 grams, 20.32 mm. Internal 17.84 x 17.11 mm [UK size O 1/2, US size 7 1/2, Europe size 15.61]. 3rd-4th century AD. The ring has a plain shank and decorated shoulders consisting of a rounded chevron or cicada abutting the elliptical mount for the carnelian intaglio. The motif on the surface of the intaglio is a rounded column with expanded base and capital, from which issue three diagonal strokes; this probably represents the Roman ara or altar with the sacred fire on it, the smoke indicated by the diagonals. Reference: Higgins, R.A. Greek & Roman Jewellery, London, 1961, p.190 & pl.62E. Extremely fine condition. This item is accompanied by an XRF ancient metal test certificate from Oxford X-ray Fluorescence Ltd.