The 2.33-carat “Winston Red” diamond is the centerpiece of a collection of natural colored diamonds that Ronald Winston, son of Harry Winston, has donated to the Smithsonian Institute. At 2.33 carats, it’s one of the largest fancy red diamonds in the world. (Photo credit: Robert Weldon/Photo courtesy of Ronald Winston)

The “Winston” Red will go on display at the National Museum of Natural History in Washington, D.C., alongside the Winston Fancy Color Diamond Collection, an assemblage of 40 stones that showcases the color range of diamonds. Seen here is a selection of diamonds from the collection. (Photo credit: Robert Weldon, arranged by Gabriela Farfan/Photo courtesy of Ronald Winston)