When added to vanadium, erbium lowers the hardness and improves pliability of the metal. Erbium oxide adds a pink hue to glasses and porcelain enamel glazes. Recent production techniques that ...

From two of these substances, he discovered erbium and terbium ... of 2,352 F (1,289 C), are known. The oxide is a dark maroon or chocolate color, and 21 isotopes with atomic masses ranging ...

In one final twist, however, the spectroscopist Delafontaine, in confirming their existence, erroneously switched Mosander's original names and called the amethyst-coloured compound erbium oxide ...