It's a great starter sample for the little geologist—16 semi-precious gemstones of the U.S.A. 

Kit includes these specimens - Quartz, Moss-Agate, Carnelian, Chryssocalla, Florite, Obsidian, Opal, Thulite, Jasper, Amazon Stone, Amythyst, Ulexite, Rose quartz, Serpentine, Onyx, Unakite.

On a 4x6" inch card.

Part of Copernicus Toys Compact Curiosities line.