Rectangular tablet inset with a freeform opal doublet (21.75 x 8.5 mm) and accented with a full cut round diamond melee weighing approximately .03 carat (H color, SI1 clarity), with hinged bail with safety catch, stamped 18K 750 and with maker's mark Opex.

1 5/16 x 7/16 in.

4.0 dwt.

Good estate condition; opal displays minute crazing and nicks.