Ancient Roman gold ring with a carnelian cameo of a comic mask, 1st century

An Ancient Roman gold ring with a ringstone of a comic mask.

The carnelian cameo dates to the 1st century BC and the ring dates to the 3rd century AD.

Ring size F 1/2 UK / 3 US.

Weight 1.4 grams.

The bezel measures 0.9 x 0.7cm.

A similar gem of larger proportions was sold by Christie’s, New York in the sale ‘MASTERPIECES IN MINIATURE: ANCIENT ENGRAVED GEMS FORMERLY IN THE G. SANGIORGI COLLECTION PART III’, 14 Apr 2022, lot 31.

https://onlineonly.christies.com.cn/s/masterpieces-miniature-ancient-engraved-gems-formerly-g-sangiorgi/roman-citrine-cameo-theater-mask-31/147126

Ring references:
https://www.britishmuseum.org/collection/object/G_1872-0604-330
https://www.britishmuseum.org/collection/object/G_1917-0501-863