Moe, the subject of your cameo in high relief is a bacchante; a female follower of the Roman god of wine Bacchus, these devotees were the most important members of Bacchus's legendary retinue the Thiasus. These classical maidens, are the quintessential feminine and have been represented in art forms since ancient Roman times.
The condition of your cameo is extremely important in terms of value. If you find any cracks or hairline fractures on the front or the reverse of your cameo, this will detract from the value. The gold mount surrounding your cameo beauty, has the lovely patina of age; this is attractive and when combined with the classical subject, we have an antique cameo tablet of time irrecoverable.