A two layers agate cameo. Bust of a roman empress....

A two layers agate cameo. Bust of a roman empress.
33 x 43 x 8 mm
The character is turned to the left and is characterized by a slightly aquiline nose, an eye with an engraved pupil, a large ear, a small mouth and a chin, with a grooved hair pulled back, framed on the forehead and on the nape by two braids placed side by side. The portrait is stylistically referable to the models of the Severian or post Severian dynasty (Giulia Domna, Fulvia Plautilla, Aquilia Severa, Cornelia Supera). Slight wear marks, traces of burns and antique chips on the edge. Inscriprion engraved on the backside. Interesting work, possibly antique and reworked during the post Renaissance.
17th-18th century.