Chemistry comes to geocaching with this trio of spinning trackable Geomedals in three antique finishes. 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 the chemical formula for Germanium Oxide from the Periodic Table of Elements, which spells GeO. A ring at the top of each allows for easy attachment to an object for travel.