Vintage-Style Marcasite and Mixed Stone Pendant Necklace

This jewelry piece is a vintage-style pendant necklace featuring a dark, oxidized metal construction, likely sterling silver with a heavy patina or 'blackened' finish. The pendant is an ornate, multi-tiered design centered by a large, round, white cabochon which appears to be moonstone or a high-luster pearl, held in place by four prongs. Above and below this central stone are three smaller round cabochon stones showing significant iridescence, characteristic of opals. The metalwork is intricately detailed with a marcasite-set frame, creating a glittering, textured surface typical of Edwardian or Art Deco revival styles. The pendant is suspended from a dark link chain that is punctuated by small, white seed pearls integrated into the chain links. Regarding condition, the metal shows intentional oxidation for a gothic or antique aesthetic, and all stones appear securely set, though slight wear to the finish of the metal links is visible. The overall craftsmanship suggests a high-quality fashion or mid-range fine jewelry piece, likely produced in the late 20th century as a historical revival piece.