Pearl necklace with clasp with sapphire and diamonds

Necklace consisting of two rows of beautiful cultured pearls. The clasp in 18 carat white gold and set with twelve brilliant-cut diamonds, in the center a natural, oval faceted blue sapphire from Ceylon weighing 6.29 ct. Diamonds in total approximately 1.20 ct. The pearls vary in size from 7 to 8 mm and have a fantastic sheen. The sapphire has a certificate from the Gübelin laboratory in Switzerland.

Europe, circa 1975