The metal should be kept under light mineral oil or sealed in a plastic material. Neodymium and praseodymium were previously regarded as one element called didymium.
Neodymium is present in the minerals monazite and bastnasite.
Neodymium colors glass shades ranging from pure violet to wine-red and warm gray. This glass is used in astronomical work to produce sharp bands and in laser material to produce coherent light. Neodymium as a component of didymium is used for tinting glass to make welders goggles. Neodymium salts are used as a tint for enamels. Bayer Corporation is a research-based company with major businesses in health care and life sciences, and chemicals.