Vintage Circular Brutalist Textured Brooch

This item is an oval or circular brooch featuring a distinctive, heavily textured surface characteristic of the Brutalist design movement, likely dating from the 1960s to 1970s. The piece is constructed from a silver-toned metal, possibly pewter, rhodium-plated base metal, or sterling silver. The surface is composed of an intricate, organic, 'nugget-like' texture with numerous small, jagged protrusions that create a high-relief, three-dimensional effect. This granulated style mimics natural mineral formations or molten metal. The interior rim of the circle is smooth and polished, providing a sharp contrast to the chaotic outer texture. On the reverse side, a standard pin stem and safety catch are visible, though no specific maker's marks or hallmarks can be definitively identified from the primary angle. The condition appears sound with no missing elements, showing a light patina and minor surface wear consistent with age. The craftsmanship reflects a mid-century modern aesthetic that values raw, tactile expression over traditional smoothness.