From 1793 to 1857, the cent was a copper coin about the size of a half dollar. The discovery of gold in California caused a large inflation in prices. As gold became more abundant, the price of copper rose. Cent and half-cent manufacture was one of the only profit centers for the Mint and by 1850 it began looking for alternatives. In 1857, the Mint reduced the size of the cent and changed the composition to 12% nickel and 88% copper (copper-nickel), issuing a new design, the Flying Eagle cent. The new pieces were identical in diameter to modern cents, though thicker. This was the first use of copper-nickel for United States coins. The copper-nickel made them look brighter and they began to be called "White cent" or "Nicks".