14k Gold Herringbone Chain Necklace with Discoloration

This is a 14k gold herringbone chain necklace, 18 inches in length, originating from Italy. The necklace features a flat, flexible design characteristic of the herringbone style, composed of V-shaped links that lie flat to create a smooth, reflective surface. The gold color is bright and consistent, indicative of 14k yellow gold alloy. One notable characteristic is a distinct color variation, with approximately one-quarter of the necklace appearing to have a purplish discoloration, while the remaining three-quarters maintain their original golden hue. This discoloration is significant and affects the aesthetic appeal and potentially the material integrity of that section of the chain. The exact cause of this purple hue is not definitively clear from the image but could be due to tarnishing from chemical exposure or possibly a metallurgical reaction. The chain is equipped with a spring-ring clasp, a common and functional closure for necklaces, which appears to be in good working order. There are no visible maker's marks or stamps discernible in the provided image crops, though such marks are typically found near the clasp. The craftsmanship appears to be of standard quality for mass-produced fine jewelry, with a uniform link pattern throughout the chain. The overall condition of the golden portion appears good, with no obvious signs of kinks, breaks, or excessive wear, aside from the prominent discoloration.