Erbium metal is a common Lanthanides metal
Erbium metal is used for amplifiers in optical fibers and therefore is very important for the internet and the transcontinental data transfer. Erbium oxide can double the intensity of optical light under certain conditions and so allows the signal to travel long distances without fading. This is a good example of how a neglected and mostly unknown element can certainly become very popular for a single special qualification.
Amazing Erbium metal standard density cube 10x10x10mm, 99.99% pure. The sample weighs 8.9 grams (with a tolerance of ± 0.1gram), which is the theoretical density of the Erbium metal itself. This cube is amazing for any science classrooms, schools, universities and collectors. Pure Erbium metal cube for element collection.