An 60+g sample of Barium metal in the form of a beautiful and stunning distilled crystal cluster. This museum grade sample was produced by distillation of the metal and slow cooling of the vapor to grow the beautiful crystals you see here. The sample is sealed in a quartz dome under Argon to permanently preserve the shiny surface. Purity is 99.95%. Even under argon this metal will still darken slightly forming colorful hues on the surface as can be seen in the photos. This is a truly unique and one of a kind piece! Pictures just don't do it justice.