Centering a Rose cut diamond measuring app. 5.5 x 4.2mm, framed with an additional 22 Rose cut diamonds measuring app. 3.0 x 2.0mm - 1.0mm in a central, open work plaque with foiiate links, fashioned in silver & 14k gold.Dutch hallmarks for circa 1950. Earlier antique central plaque (c. 1840) mounted on a later gold frame with links contemporary to c. 1950. Length 6 1/2 inches.