Rudraksha commonly means the seed of the rudraksha tree, Elaeocarpus ganitrus. Worn as a bead or strung as a mala, it is the fruit associated with Rudra.
Within the International Nath Order the seed is used as other Naths have used it: a bead on a string, a mala for japa, a thing already unique before any count of faces. The origin story—Rudra’s tears falling as trees—is Sri Kapilnath’s, in Legends of Rudra. Facet-counts, rarities, and prices are not the work of this page. Rudraksha is the seed. Rudra is the god-form. Do not read them as one word.