I found this small ball bearing, approx. 2.5 mm diameter (but looks smaller), when it fell onto the floor from who-knows-where. I was curious whether it had any particular topographical features, or was merely a smooth globe, indicating the origin perhaps. It looks smooth in this Leica D-Lux6 macro, enough to reflect the photographer. f2.8, 1/100 handheld, ISO 80.