Roman Gold Ring with Dolphin Gemstone

2nd-3rd century AD. A gold ring with expanding D-section hoop and angled shoulders, pelta-shaped openwork plaque to each shoulder, large raised bezel with inset jasper intaglio, intaglio image of a stylised swimming dolphin, inscription 'VIVA / TIBI' for 'life to you' flanking in Roman capitals. Cf. Spier, J., Ancient Gems and Finger Rings, Catalogue of the Collection, Malibu, 1992, p. 140, no. 385, for a similar carnelian intaglio. 6.62 grams, 23.36mm overall, 18.03mm internal diameter (approximate size British Q, USA 8, Europe 17.49, Japan 16) (1"). From the private collection of a Dutch jewellery collector; acquired in the 1990s.
Condition Report: Very fine condition.