Vintage Cultured Pearl Necklace with Filigree Fishhook Clasp

This is a classic single-strand necklace featuring graduated or semi-consecutive cultured pearls, likely Akoya, displayed on a jewelry mannequin. The pearls exhibit a creamy white body color with subtle rose overtones and a high-luster finish. While the pearls appear uniform from a distance, close inspection reveals natural surface irregularities and blemishes, characteristic of organic growth. Each pearl is individually hand-knotted on silk thread to prevent friction and ensure security should the strand break. The necklace is secured by a vintage-style white metal fishhook safety clasp, common in mid-20th-century jewelry. The clasp features intricate openwork filigree and appears to be set with a small accent stone, possibly a diamond or clear spinel, in a centralized marquise or navette-shaped housing. There are no visible hallmarks in the image, but such clasps were frequently made of 10k or 14k white gold, or sterling silver. The condition shows light signs of wear, with some visible grit or accumulation of debris near the knots, suggesting that the silk may need professional cleaning or restringing to maintain structural integrity. The overall craftsmanship indicates a mid-market to high-quality piece likely dating from the 1950s to 1970s.