F3279

Box of six turquoise blue opaque crystals Long Caption: A box of six turquoise blue opaque crystals. The writing on the lid of the box reads: 'Alum crystals. 26 octohedrons small. 20 cubo-octohedrons'. Credit line: © National Maritime Museum, Greenwich, London, Herschel Collection Object: AST1030.49 Artist: unknown Date: unknown Medium: card Size: 32 mm x 90 mm x 69 mm Click here to buy a bespoke print of this image.