18k yellow gold herringbone choker necklace with a central motif set with seventy-six modern brilliant-cut diamonds and a cabochon ruby weighing approximately 1.50 ct, extended by twenty square-cut diamonds, secure ratchet clasp. Italian work from 1980-90. Total estimated weight of diamonds: 4 ct Size of ruby: 8.4 x 6.2 x 3 mm Length: 39 cm - Width: 1.4 cm Gross weight: 143.5 g