Freshwater pearl necklace with 'butterfly' clasp,

Necklace freshwaterpearls with clasp 'Butterfly', pavé setting with 47 brilliant cut diamonds, totalling ap. 0.55 ct, ap. FW F-G)/VS, 2 ruby, 2 emerals, 2 sapphire cabochons, 24 rows rice grain pearls, ap. 3 - 3.5 mm, interjacent 32 ruby, 31 emerals and 46 sapphire beads, D: 2 mm, and 158 gold parts, total wheigt 87,1 g, L overall 43.5 cm, late 20th century, minimal signs of wear.