It is also used by turning Erbium into an oxide which is used in ceramics. It is 43rd in abundance of elements found in the Earth's crust. Erbium is in the Lanthanide group. Erbium melts at 2784 degrees F, boils at 5194 degrees F, and has a 9.1 specific gravity. It has a silvery white color.
Erbium is also soft, malleable and has a bright, metallic luster.