MARINA B "Onda". Torque necklace in 750-thousandths yellow gold, the central wavy motif set with fifty-four modern brilliant-cut diamonds, the links repeating the same shape threaded on a flexible steel blade, a retractable clasp on the back (reported). Signed and numbered K 500. Circa 1980. Total estimated diamond weight: 2.10 ct Neck size Length : 1.2 cm - Width : 34 cm - Gross weight : 108.8 g