A Study of the Winston Red: The Smithsonian's New Fancy Red Diamond
ABSTRACT Red diamonds are among the rarest gems on Earth, especially Fancy red diamonds that are pure red and unmodified by brown, orange, or purple. At 2.33 ct, the Winston Red diamond is the fifth-largest Fancy red diamond known to exist and the only Fancy red diamond on public exhibit. On April 1, 2025, it was unveiled in a new exhibit at the Smithsonian National Museum of Natural History in Washington, DC. This is the first scientific and historical study conducted on this noteworthy stone.