Pearl necklace with high-quality clasp,

Necklace of Akoya cultured pearls 7-7.5 mm, champagne, with bayonet changing clasp of 18K yellow gold, 6.2 g, with 1 baguette-cut diamond ca. 0.15 ct, good colour and clarity, L: 41.5 cm, late 20th century, pearls with minor signs of wear.