Pair of Vintage Blue Cabochon Earrings

This is a pair of vintage earrings, likely clip-on or stud style, each featuring a large oval-shaped cabochon stone in a deep, translucent blue color. The cabochons appear to be made of glass or a synthetic material, displaying a captivating opalescent or swirling effect within the material, particularly visible in the upper earring. This internal marbling effect, with lighter blue or white streaks against the darker blue background, suggests a potential 'dragon's breath' or opaline glass. The cabochons are set in what appears to be an ornate metal bezel setting, possibly brass or a gold-tone alloy, with a decorative edge that accentuates the oval shape of the stone. The metal shows signs of age, possibly a natural patina or tarnishing, which is consistent with vintage jewelry. The overall size appears to be moderate, suitable for earrings, with a slightly domed profile to the cabochons. No specific maker's marks or signatures are visible from the provided images, but the style suggests an era ranging from the mid-20th century, possibly Art Deco revival or mid-century modern, depending on the specific construction of the backings (not visible). The craftsmanship appears to be good for mass-produced vintage costume jewelry, with the stones securely set. There are no obvious signs of significant damage such as chips or cracks to the cabochons, though minor surface wear consistent with age and use may be present.