Agate and silver-tone metal brooch

This is a handcrafted brooch featuring a roughly triangular piece of brown banded agate as its central decorative element. The stone displays characteristic translucent layering and earth-toned brown and cream banding. The setting and surrounding framework are constructed from a silver-tone metal, likely sterling silver or white metal alloy, exhibiting dark patination in the recessed areas consistent with age and oxidation. The frame incorporates an asymmetric arrangement of twisted wire loops, soldered bead accents, and small stamped leaf or petal-like metal drops clustered near the bottom left corner. A portion of the pin stem is visible protruding from the right side of the triangular stone setting. No maker's marks, hallmarks, or signatures are clearly legible from the provided image. The overall design and construction details are consistent with mid-20th-century artisan or arts-and-crafts jewelry. The item shows moderate surface wear, tarnish, and patina appropriate for a vintage piece. The owner's provided context identifies this item simply as a brooch, which remains unverified by physical inspection. The identification is based purely on visual characteristics without any implied confirmation of brand, exact age, or metal purity.

Based on what I can see in the provided image, this is a handcrafted brooch featuring a roughly triangular brown banded agate stone set in a silver-tone metal frame with twisted wire loops, bead accents, and stamped leaf drops. The owner's provided context identifies this item simply as an unverified brooch. Because I am evaluating this piece solely from a photograph, I cannot verify the exact metal purity, stone origin, or whether it is genuinely vintage artisan work versus a later reproduction or stylistic copy. Based on typical market behavior for mid-20th-century style artisan-crafted costume and silver-tone jewelry, items of this type generally command a modest collector interest. If the piece is indeed a vintage, mid-century artisan-made item, an estimated value range of $75 to $150 is reasonable. However, would need physical inspection to confirm material composition and construction details. If physical and chemical testing were to reveal the piece is a modern reproduction or made of base metal alloys without silver content, the value would likely drop to the $20 to $40 range. To establish a more definitive assessment, one would need in-person examination, hallmark verification, and professional testing by a qualified metals expert.