Vintage Rhinestone Costume Jewelry Earring

This is a single vintage costume jewelry drop earring, likely dating from the mid-20th century (circa 1950s-1960s). The piece features a floral-shaped stud at the top, followed by a linear bridge of four circular-cut clear rhinestones, culminating in a large pear-shaped (teardrop) dangle. The stones are set in what appears to be a base metal with a dull silver-toned finish. A critical condition issue is the missing centerpiece; the large teardrop focal stone is absent, leaving behind a visible red adhesive residue or backing within the metal housing. The existing small rhinestones show significant signs of aging, including 'dead' or yellowed stones indicative of foil backing degradation. The metal settings are prong-style for the small stones, showing some oxidation and surface wear throughout. There are no visible maker's marks or stamps on the front, and without a view of the back, the specific manufacturer (such as Trifari or Coro) cannot be identified. The craftsmanship is typical of mid-market vintage fashion jewelry intended for formal wear, now requiring professional restoration to replace the missing cabochon or glass stone.