The art of decorating things with shells is called rocaille. Originally the word referred to the shells and stones applied to artificial grottoes in the seventeenth century, but the style developed most during the reign of Louis XV in France (1715-1774). Rocaille is most often used (for obvious reasons) on small pieces of furniture, mirror frames, and small things like snuffboxes.
Joanna Mincarelli's Southampton shop, Erika's Place II, features rocaille items made by Joanna. Formerly in a small courtyard space, the shop has now moved to 67A Jobs Lane. As well as shellwork, the "posh coastal lifestyle boutique" offers clothing, accessories, and home décor. [Curbedwire]