Ruby and diamond brooch and an emerald and diamond ring

Comprising: a brooch of abstract design set with circular- and brilliant-cut diamonds, enhanced with square and baguette diamonds, the detachable central segment set with cabochon and polished rubies and circular-cut diamonds, pendant fitting for the central segment; and a ring centering a millegrain-set cabochon emerald within a surround pavé-set with circular- and brilliant-cut diamonds, size 54^1/2.