Brown wash, and pen and gray ink on thick, moderately textured, cream wove paper
Dimensions:
Sheet: 12 1/2 × 8 1/8 inches (31.8 × 20.6 cm)
Inscription(s)/Marks/Lettering:
Lettered inside image in pen and gray ink, upper center: "UNIQUE SPECIMENS IN MINERALOGY"; center left to lower right: "HORNBLENDE | FELDSPAR | QUARTZ | TRAP | ENGLISH TALC. CHINESE JADE | WACKE
Credit Line:
Yale Center for British Art, Paul Mellon Collection