Tiny painting inside an open pendant. Portrait of a young woman, obviously very wealthy, in a fancy dress, with dark hair worn down, in ringlets. She's looking sharply off to the side, and smirking. The whole vibe is very "Mona Lisa, if Mona Lisa was the life of the party".
https://media.mstdn.social/media_attachments/files/112/610/109/158/856/186/original/be6d58777b32dece.jpg