Chemistry comes to geocaching with this set of spinning trackable Geomedals in an antique silver coloured finish. The fronts feature an atom, microscope, and leaf with 3D details, while the backs have a laser engraved plate adhered to the spinning middle section of the tokens. They feature data from the Periodic Table in four different designs: CaCHe GeO, SWAg, and WPt. A ring at the top of each allows for easy attachment to an object for travel. Each coin is also available individually.