Three Scottish silver, agate and cairngorm brooches circa 1860 One round highly engraved silver brooch inlaid with agate and centered with raised faceted cairngorm stone, dia.1.25in. One oval engraved silver brooch inlaid with agate and centered with raised oval faceted cairngorm stone, W1.5. One highly engraved silver brooch inlaid with agate and centered by oval raised faceted caringorm stone, W2.25in