An antique diamond corsage brooch

细节
An antique diamond corsage brooch
Of floral design, the diamond flowerhead mounted en tremblant with diamond collet centre to graduated diamond leaves and stem, mounted in silver and gold, with French assay marks, circa 1880, 12.5cm. long, in fitted Duvivier leather case with applied monogram A.C.M. (flowerhead detachable to form brooch, with brooch fitment)