Not to mention rare elements such as lanthanum, cerium, and neodymium, essential to modern technology and commanding high prices.
Germanium 64 is not at all stable, and neither is neodymium 128, but the instability can be corrected by positive beta emission.
neodymium (Nd) forms the chief portion of the old “didymium.”
neodymium ne·o·dym·i·um (nē'ō-dĭm'ē-əm)
A rare-earth element used for coloring glass. Atomic number 60; atomic weight 144.24; melting point 1,016°C; boiling point 3,066°C; specific gravity 7.008 (at 25°C); valence 3.
A shiny, silvery metallic element of the lanthanide series. It is used to make glass for welders' goggles and purple glass for lasers. Atomic number 60; atomic weight 144.24; melting point 1,024°C; boiling point 3,027°C; specific gravity 6.80 or 7.004 (depending on allotropic form); valence 3. See Periodic Table.