Antique diamond flower brooch

An old-cut diamond flower brooch, sculpted as a five-petal flowerhead on a stalk, encrusted with multi-sized old-cut diamonds interspersed with diamond chips, with an estimated total weight of 1.88ct, brooch fittings to the reverse, unmarked metal testing as silver on 14ct, overall dimension 3.0cm x 2.0cm, 4.4 grams.