India, May 25 -- Two fishermen carefully withdraw their nets from a river. The sunlight gleams on their bodies, and their sinewy arms appear tense, completely employed in their task. Their stance is wide, so as to not slip, and their jaws alert, eyes intensely focused on the task at hand; one of them appears to be instructing the other. This detailed image is not a photograph, but a 1,900-year-old mosaic tile made entirely of rocks not larger than a few millimetres.

This is one of the five original pieces of art from Rome's Capitoline Museum, which are currently displayed at the Humayun's Tomb Museum as part of ongoing Mosaico exhibition. These pieces are roughly 1,700 to 1,900-year-old, and are on display till August 30.

This is the fi...