Wedgwood, Charles de Marquetel de Saint-Denis, 1767–1780, Unglazed stoneware ("black basalt"); H x W x D: 7.6 x 5.8 x 0.6 cm (3 x 2 5/16 x 1/4 in.), Cooper Hewitt, Smithsonian Design Museum, New York, N.Y. https://dartabase.art/cite/smithsonian/ld1-1643399887910-1643399893144-2

Wedgwood, Flavian Julia Helena, 1767–1780, Unglazed stoneware ("black basalt"); H x W x D: 5.2 x 4.5 x 0.5 cm (2 1/16 x 1 3/4 x 3/16 in.), Cooper Hewitt, Smithsonian Design Museum, New York, N.Y. https://dartabase.art/cite/smithsonian/ld1-1643399887910-1643399893149-1