"Nope, water runs right through it," T.R. said. He took a step back, extended his arms, and gave it the full Ozymandias. "Sulfur!" he proclaimed, in the same tone that a conquistador might have said "Gold!" "The stone that burns!" Then he added, "S!," which Saskia knew was an allusion to its symbol on the periodic table. "We so rarely see or touch an actual element , you know. Nitrogen and oxygen in the air? Those are diatomic molecules and not the element itself. Aluminum, sure—but that’s always an alloy. Iron, sometimes—but usually steel, another alloy. Mercury in an old thermometer, maybe. Helium in a balloon. But here’s the real deal, Your Majesty. Two hundred thousand tons of an element . About a year’s supply, for our project."