A Victorian opal, diamond and ruby brooch/pendant, late 19th century

A Victorian opal, diamond and ruby brooch/pendant, late 19th century, in the form of a flowerhead, with an old circular-cut diamond collet-set to the centre, surrounded by five opal cabochons with a border of old circular-cut rubies and diamonds, the folding bail set with three old circular-cut diamonds in gold and silver, with detachable pin, width 2.4cm, Harvey & Gore case