A sample of Tl metal in the form of a shiny 1in engraved cube sealed under argon in a glass dome. Purity is 99.99%. The metal is extremely shiny and oxide free and has the element name, symbol and atomic number engraved on the cube. You almost never see Tl metal this bright and shiny! Please check my Bonanza store for more element samples. I have almost every collectible element available.