An early 20th century opal, diamond and sapphire brooch, by Dreicer

An early 20th century opal, diamond and sapphire brooch, by Dreicer
The central oval cabochon opal within an old brilliant-cut diamond pierced oval surround with old-cut diamond and calibré sapphire fan shaped quarters, circa 1920, 3.9cm long
Pin signed Dreicer & Co (signature rubbed)