Vintage Iridescent Screw-Back Earrings

This is a pair of vintage screw-back earrings, likely dating from the mid-20th century, possibly the 1950s or 1960s, given the screw-back mechanism which was common before widespread use of pierced earrings. Each earring features multiple iridescent glass beads, often referred to as 'moon glow' or 'aurora borealis' style beads, which exhibit a captivating play of color, shimmering from pale blues and greens to pinks and yellows depending on the light and angle. One earring has three beads arranged horizontally, while the other has three beads arranged vertically. The beads are spherical and appear to be approximately 8-10mm in diameter, each attached to a base with some form of metal cap or setting, visible as a small, metallic element at the top of each bead where it connects to the overall structure. The metal findings for the screw-back mechanism and bead connections appear to be silver-toned, possibly plated base metal, showing some signs of tarnish and light wear consistent with age and use. There are no obvious significant chips or cracks on the glass beads, but minor surface abrasions or scuffs might be present given their age. The screw-back mechanisms appear to be functional, allowing for adjustment to fit the earlobe. The craftsmanship suggests mass production typical of costume jewelry from this era, focusing on aesthetic appeal rather than precious materials. The unique iridescent quality of the beads is the primary distinguishing feature.