First Uses of the Periodic Table Element -Erbium. The Rise and Fall of Erbium: A Historical Perspective. Erbium, a lustrous, soft, and silvery-white metal, holds a significant place in the evolution of technology and science. It was first discovered in 1843 by Swedish chemist Carl Gustav Mosander, who isolated it from the mineral gadolinite. For many years, erbium played a crucial role in various applications due to its unique properties. However, as technology advanced and alternative materials emerged, erbium slowly lost its prominence in some fields. This article delves into the first uses of erbium and highlights the reasons behind its declining popularity in those areas.