GIA Scientists Study One of the World's Rarest Red Diamonds

The Winston Red, one of the rarest red diamonds ever discovered, is now on public display at the Smithsonian's National Museum of Natural History, captivating visitors with its deep crimson brilliance and storied past.

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Weighing 2.33 carats and possessing the coveted GIA color grade of "Fancy red", the Winston Red is the fifth-largest diamond of its kind known to exist and the only one currently on public view. The diamond is the highlight of a new exhibition of fancy colour diamonds in the museum's Winston Gallery, where it shares the spotlight with 40 other exquisite gems from the Winston Fancy Color Diamond Collection.

The diamond was recently examined by scientists from the Gemological Institute of America (GIA), in partnership with experts from the Smithsonian and the Paris School of Mines. The team conducted an in-depth analysis to unravel the secrets behind the gem's striking colour and origin.