The Alexander Mosaic, considered the most important mosaic of the Roman age, is a detailed piece of art measuring 583 by 325 centimeters.

There are around 2 million pieces that make up the Alexander the Great mosaic, but where did they come from?

2 million stones, one masterpiece: How the House of the Faun's mosaic was crafted. (photo credit: Andreas Wolochow. Via Shutterstock) A new study published in the journal PLOS One has shed light ...