Smithsonian Institution Gem and Mineral Hall Smithsonian Institution Gem and Mineral Hall Smithsonian Institution Gem and Mineral Hall Smithsonian Institution Gem and Mineral Hall Smithsonian Institution Gem and Mineral Hall “hard, non-living part of the earth…” The Smithsonian Gem and Mineral Collection Smithsonian Institution Gem and Mineral Hall Smithsonian Institution Gem and Mineral Hall