An agate cameo and diamond brooch, Germany, circa 1550, mount circa 1900, set with an agate cameo

An agate cameo and diamond brooch, Germany, circa 1550, mount circa 1900, set with an agate cameo carved to depict a hunting scene, within a later brooch of ribbon bows and foliate festoons set with rose-cut diamonds and centring on a cushion-shaped diamond, the reverse of the cameo with a glazed compartment, mounted in silver and gold, length 4.3cm, cameo 1.6 x 1.9cm, case