Classical Bust Profile Pendant Necklace

This is a pendant necklace featuring a central element with a profile of a classical figure, likely a Roman or Greek bust, possibly carved from a natural material such as shell or stone, but now exhibiting significant verdigris or patina, suggesting it may be a copper or bronze material that has oxidized over time. The profile is set into a silver-toned metal bezel that irregularly follows the contours of the bust. The bezel\'s outer edge appears hand-hammered or textured, giving it an artisanal, rustic feel. A delicate twisted wire accent is visible between the inner edge of the bezel and the central figure. A bail, also made of the same silver-toned, likely hammered metal, is affixed to the top of the pendant, allowing it to hang from a necklace. The necklace itself is a double-strand, snake-chain style, also in a silver-toned metal, possibly sterling silver given the overall appearance. The entire piece has an antique or vintage aesthetic, with visible wear and oxidation, particularly on the central figure, which contributes to its character. The craftsmanship appears to be handmade, indicating a unique piece rather than mass-produced. There are no discernible maker's marks or signatures visible in the image. The estimated age is likely mid-20th century or earlier, given the style and patina.