Black obsidian goes in the north — the career sector. Classically placed near the front door or at the edge of a desk, facing outward. It does the boundary work so you don't have to perform it.
In traditional feng shui, black obsidian belongs to the North — Career & Life Path (坎 Kan) sector of the bagua map. Place a stone or two in that corner of the room or on a shelf facing that direction — the stones are tactile cues more than ornaments, something you'll pick up when you pass by. That's how this kind of object wants to be used.
Arrives cleansed under moonlight in a small velvet pouch with a printed bagua placement card. Stones vary in size and marking — these are real polished tumbles, not identical castings. Approximately 6 stones per pouch, 20–30mm each.
Aligned intentions: Protection · Clarity