A fully illustrated guide to gemstones Striking full-color photographsDetailed descriptions of each stoneAdditional artwork showing identifying featuresPublished in collaboration with the Smithsonian Institution, America's foremost authority in history and science.A fully illustrated guide to gemstones Striking full-color photographsDetailed descriptions of each stoneAdditional artwork showing identifying featuresPublished in collaboration with the Smithsonian Institution, America's foremost authority in history and science.