Vintage Art Deco Style Marcasite and Sterling Silver Scalloped Necklace

This is a vintage necklace featuring a series of five distinct scalloped, fan-shaped panels linked together to form a bib-style focal point. While the user context mentions diamonds, the visual characteristics strongly suggest the stones are actually marcasite (iron pyrite), which was extremely popular in silver jewelry of this style to mimic the sparkle of small diamonds. Each panel is crafted with intricate openwork filigree and milgrain detailing, a hallmark of Art Deco and Art Deco revival aesthetics. The metal appears to be sterling silver, exhibiting a deep, natural greyish patina in the recessed areas which highlights the geometric texture. The center panel is the largest, flanked by four graduated smaller panels, all joined by small jump rings. The focal section is attached to a fine-link cable chain that includes small bead or faceted stations for added texture. The piece secures with a traditional spring-ring clasp. Although no maker's marks are visible in the provided image, the craftsmanship suggests a mid-20th-century production, likely 1940s-1960s, drawing on earlier 1920s design motifs. The condition appears excellent with all stones present and no visible repairs or broken links, though the metal shows surface oxidation consistent with age.