A hardstone cameo and diamond brooch, circa 1860

A hardstone cameo and diamond brooch, circa 1860, set with an oval 'cameo habillé' in banded agate depicting an African woman in profile, with a rose-cut diamond headband, earring and necklace, her hair held in a golden net, within an openwork gilt silver border, cameo 3.3 x 2.4cm, brooch 4.7 x 4cm, case

Cf.: Diana Scarisbrick, Jewellery from Renaissance to Art Deco, 1540-1940, Tokyo Metropolitan Teien Art Museum, Japan, 2003, p.148 no. 53 and 54, and Henri Vever, French Jewelry of the 19th Century, English edition translated by Katherine Purcell, London, 2001 (originally Paris, 1906-8), p.786 for comparable examples, also referred to as 'commesso' cameos