You pull a loop of string around your ring finger while touching a Medium or smaller object. For the duration of the spell, as an action you can remove the string to determine the location of the object if it’s within 100 feet of you. Until the end of your next turn, you mentally receive an image of the location if it is familiar to you, otherwise you discern the direction to its location. This spell can’t locate an object if any thickness of lead, even a thin sheet, blocks a direct path between you and the object. The spell ends when you remove the string, or if you cast it again.

Source: The Delver's Guide of Beast World