Gray schist

Grey schist with pink sandstone

Bronze

Gilt bronze

Stucco with traces of polychrome

Etching and aquatint in black and gray with graphite on wove paper

Ivory with gray stain

Album leaf; pen, sepia ink, traces of color tinting, and gray wash on paper

Porcelain with blue, green, and gray enamel, and gilding (Arita ware, Imari ware)

Quartz, smoky quartz, rutilated quartz, labradorite, chalcedony, citrine, calcite, prehnite, turquoise, magnesite, tiger eye, gray feldspar, agate, Italian onyx, serpentine, marble, limestone, glass, and steel pins on coated polystyrene

Gold

Graphite on paper