Holmium belongs to the Lanthanides family, has chemical symbol Ho and atomic number 67.
Holmium is, for a lanthanoid, quite resistant against oxidation and only slightly toxic. It is the element with the highest magnetic moment, therefore it has
its main application within high-strength magnets. The color of its oxide is a very pure yellow, which is used to stain special glass.
We suggest this element at the purity of 99,95% in a 7 mL glass vial with about 1,5 cm of diameter.