Vintage Cobalt Blue Glass and Gold Tone Cufflinks

This pair of vintage cufflinks features striking spherical cobalt blue glass cabochons, estimated to be approximately 10-12mm in diameter. Each glass globe displays a captivating internal sparkle or aventurine effect, resembling a starry night sky or goldstone, suggesting a possible 'goldstone glass' composition. One of the cufflinks shows a distinctive gold-colored swirl or band embedded within or applied to its blue glass sphere, adding a unique decorative element. The settings holding the glass spheres appear to be gold-tone metal, possibly brass or a gold-plated base metal, and are secured by prong-like elements that cradle the globes. The toggle closures, which are the part that fastens through the shirt cuff, are also made of a matching gold-tone metal. These toggles have an elongated, slightly rounded bar shape and are connected via a small hinged mechanism, typical of classic cufflink designs. The metal components exhibit a noticeable patina, consistent with age and use, appearing somewhat tarnished and less lustrous than new. There are no obvious signs of significant damage like chips or cracks in the glass, though minor surface wear or scratches on both the glass and metal are present, expected with vintage jewelry. No discernible maker's marks or signatures are visible in the provided images. Based on the style and materials, these cufflinks likely date from the mid-20th century, possibly 1950s-1970s. The craftsmanship appears to be commercially produced, with good attention to detail in the setting of the glass.