All items, equippable or not, that are counted as Artifacts are special, stronger items that do not appear in the Buy menu at vendors, contrary to Common items. These are bought and sold individually and usually are unique, and if one appears in the Artifacts menu of a town's vendor that one item can be bought by itself and then be sold by itself anytime afterwards to reappear in the Artifacts menu. The vendor shopkeeper will specifically remark about how rare a find your Artifact is whenever you specifically sell one.
Pages in category "Artifacts"
The following 200 pages are in this category, out of 239 total.