Sands of the Nile, also known as Hindu Sands, is a stage illusion which was performed and made popular by Doug Henning.
Henning would stand behind a small, high, table, bearing a large transparent bowl and three small piles of colored sand. He would begin by pouring ordinary-looking water into the bowl. As he began to tell a story about an ancient Egyptian ritual, he would stir the water with his bare hand, upon which it would turn black and opaque. As the story unfolded, he would then place a handful of each color of sand into the bowl of dark water, then extract them, one by one, dry and unmixed. Henning would then stir the water one last time, and it would again become completely clear, with a few stray grains of sand left in it.