Tortoiseshell brooch depicting a butterfly, the body in chased 14K (585) gold, the wings applied with gold filigree motifs using the "piqué-posé" technique, finished with a heart-shaped tassel. English work of the 19th century. Height: approx. 8cm. Gross weight: 10.5g (missing) An English 19th century "piqué-posé" butterfly brooch CR} This brooch is typical of Birmingham and Sheffield, which were major centers of "piqué-posé" production in the 19th century. Some examples in tortoiseshell or horn are also attested in America. Charlotte Gere and Alii, The art of the jeweller, A catalog of the Hull Grundy Gift to the bristish Museum: Jewellery, engraved gems and goldsmiths' work, London 1984, p. 96-97