A shell cameo is a carved relief, usually a portrait or classical scene, cut from the layered wall of a seashell so that a pale raised design stands out against a darker background. Helmet shells, which produce white on a brown or orange ground, and queen conch shells, giving white on pink, are the most commonly used.
Shell cameos were produced in large numbers from the late eighteenth century, as a cheaper and more easily carved alternative to hardstone cameos, and became especially popular during the nineteenth century as souvenirs of the Grand Tour. The town of Torre del Greco near Naples became the leading centre for shell cameo carving, and remains so today. Typical subjects include classical heads, mythological figures, cherubs, flowers and, later, idealised female profiles. Cameos were set as brooches, pendants, bracelets and rings, often in gold or pinchbeck frames. Collectors value fine detail, natural proportions and well-carved hair and drapery, along with good-quality settings. Cracks, which are best seen by holding the cameo to a light, chips and wear to high points reduce value. Shell can be distinguished from stone by its lighter weight and slightly translucent, layered appearance.
