18ct yellow gold brooch, featuring three x oval 14 mm x 11 mm opal doublets, accented by one round brilliant cut diamond of estimated weight .23 cts, very approximate J - L colour, SI2 clarity, and twelve x single cut diamonds of estimated total weight .010 carats, in an ornate design. Finished weight 11.14 grams. Overall size 60 mm x 40 mm.