Feature

●Rare Earth Element - Size of US Quarter
●One Disc, measures 24.26 mm x 1.75 mm
●Precision machined from high purity metal, ground surfaces, and laser etched labels
●Approximate weight 7.61g


Description

Erbium is a chemical element with the symbol Er and atomic number 68. A silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden, from which it got its name. -Wikipedia Quarter not included