While it may look like a blazing red ruby, the 2.33-carat Winston Red Diamond is just that—a diamond. At 2.23 carats, it is smaller than the largest confirmed fancy red diamond. On April 1,the Winston Red Diamond officially went on display at the National Museum of Natural History in Washington DC. The Winston Red is also considered a Fancy Red diamond, meaning its color is pure red. The chances of finding a Fancy red diamond like the Winston Red is about one in 25 million diamonds.