A 1g sealed ampoule of Rubidium metal.  Purity is 99.99%.  Sorry no international shipping (International buyers, your order will be cancelled if it contains this item or any one of the following: Arsenic, Cesium, Chlorine, Bromine, Gallium, Lithium, Mercury, Potassium,  Sodium, Thallium, Thorium, Uranium, Amorphous Phosphorus, White Phosphorus or the Complete Element Set)