Vintage Enamel and Faux Turquoise Decorative Button

This item is a circular decorative button or upholstery tack measuring approximately 15-20mm in diameter. It is constructed from a gold-toned base metal, likely brass or bronze-finished alloy, featuring a domed profile. The center features a bezel-set cabochon with a mottle-blue matte finish, simulating turquoise or glass. Radiating from this center are eight cloisonné-style sectors divided by metal ribs. Each sector is filled with small, honeycomb-like depressions containing light blue and green enamel or resin. The overall aesthetic suggests an Neo-Egyptian or Art Deco revival style, common in Mid-Century costume jewelry or high-end haberdashery. The metal shows significant signs of age and patina with dark oxidation in the crevices. Several enamel cells appear to have slight loss or discoloration. The craftsmanship demonstrates a mass-produced yet detailed press-molding process typical of the early to mid-20th century. No visible maker's marks are present on the front surface.