I have many "life after FIRE" projects planned or in the works, so I probably shouldn't seek out another. But I was window shopping yesterday and saw lamps made out of Lake Superior rock like this one:
These lamps are pretty and I am always collecting rocks from down by the lake. A nice gabbro or basalt lamp seems fun. But, how would you drill a hole for a lamp kit through this very hard rock? Any ideas?

These lamps are pretty and I am always collecting rocks from down by the lake. A nice gabbro or basalt lamp seems fun. But, how would you drill a hole for a lamp kit through this very hard rock? Any ideas?