Holmium is a chemical element with the symbol Ho and atomic number 67. The element's name comes from Holmia, the Latin name for the city of Stockholm. Because holmium strongly absorbs neutrons, it is also used as a burnable poison in nuclear reactors.
A classic square-style sticker with clean, crisp edges and simple-but-elegant look.
Collect A-B-C versions to form Ho-Ho-Ho!
Check out our design story!