A late 19th century diamond riviere necklace, alternately-set with undulating old circular-cut
A late 19th century diamond riviere necklace, alternately-set with undulating old circular-cut diamonds in silver and gold cut-down collets, the front part of the necklace separates to be worn as a bracelet, total approximate diamond weight 15.00cts, length 36.5cm, bracelet length 17cm