An opal and eighteen karat gold pendant, George Baird the cabochon opal, measuring approximately 14.8 x 7.8 mm, bezel-set within Modernist mount, accented by a round brilliant-cut diamond, on an unassociated fourteen karat box link chain; Estimated diamond weight: 0.05 carat. Gross weight: 6.9 dwt.; Pendant length: 1 1/4 in; Pendant width: 1/2; Chain length: 24 in.