Carved part of a piece of jewelry

CAMEO

This decorative feature often depicts a raised profile portrait, traditionally made from materials like shell or stone.

A cameo is a piece of jewelry featuring a raised design, often a carved portrait or scene, usually made from materials like shell, stone, or lava. The clue points directly to this term since "carved part" describes the relief artwork that defines a cameo. No wordplay is involved—it’s a straightforward definition commonly used in jewelry and art history.