Chromium is a chemical element with symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard and brittle metal[4] which takes a high polish, resists tarnishing, and has a high melting point. Chromium is remarkable for its magnetic properties: it is the only elemental solid which shows antiferromagnetic ordering at room temperature (and below). Above 38 °C, it changes to paramagnetic. -Wikipedia Quarter not included See more

Size of US Quarter. Precision machined from high purity metal, ground surfaces, and laser etched labels. Each disc measures 24.26 mm x 1.75 mm.