“In the early 1900s, the railroad leading to the coastal settlement of Luderitz in German South West Africa… was perpetually assaulted by the sands of the Namib Desert. Workers constantly had to shovel sand drifts off the rails. In April, 1908, a Black railroad worker named Zacharias Lewala found a perfectly clear stone… It was the first of the diamonds which would within four short years become millions of carats of harvested there annually.”