Fhelsing's Fotothing

The Marvelous Museum, a project by Mark Dion
Oakland Museum of California, 2011

From the museum catalog: "Drawing upon the overlooked orphans, curiosities, and treasures from the collections, conceptual artist Mark Dion has created site-specific installations and interventions throughout the art galleries."

This is a rather large piece of Micronesian stone money, and it's made from limestone.