Thulium Element Cube

Thulium Element CubeThulium's atomic number is 69 and its symbol is Tm. It is an easily workable metal with a bright silvery gray luster. It is fairly soft and slowly tarnishes in air. Despite its high price and rarity, thulium is used as the radiation source in portable X ray devices, and in some solid state lasers. It has no significant biological role and is not particularly toxic. High purity thulium oxide was first offered commercially in the late 1950s, as a result

Thulium's atomic number is 69 and its symbol is Tm. It is an easily workable metal with a bright silvery-gray luster. It is fairly soft and slowly tarnishes in air. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices, and in some solid-state lasers. It has no significant biological role and is not particularly toxic.

High-purity thulium oxide was first offered commercially in the late 1950s, as a result of the adoption of ion-exchange separation technology. Lindsay Chemical Division of American Potash & Chemical Corporation offered it in grades of 99% and 99.9% purity. The price per kilogram oscillated between US$4,600 and $13,300 in the period from 1959 to 1998 for 99.9% purity, and it was the second highest for the lanthanides behind lutetium.

This display is contained within crystal clear lucite acrylic.