Vintage Silver Roadrunner Brooch with Star Diopside Cabochon

This is a vintage silver-toned circular brooch or pin featuring a figural roadrunner motif. The piece consists of a flat, hammer-textured or slightly irregular circular backing plate, which serves as a field for the avian figure. Centered at the bottom of the roadrunner is a bezel-set, round cabochon gemstone. The gemstone appears to be a Black Star Diopside, showing a characteristic four-rayed asterism (star effect) visible under the direct light source. The roadrunner figure is cast with stylized anatomical details, including a long tail, elongated neck, and distinct crest. It is mounted such that its feet appear to grasp or rest upon the gem's setting. The metal displays a dull, oxidized silver-gray patina consistent with sterling silver or a silver-plated base metal, with some minor scratches and surface wear visible on the backplate. The construction suggests a mid-20th-century Southwestern American or Mexican origin, likely dating between the 1950s and 1970s. The craftsmanship is artisan-level with visible prongs securing the stone and a soldered attachment for the bird figure. No clear maker's marks are visible in the primary view, but the style is indicative of regional souvenir or folk-art jewelry.