After more than 18 months spent analyzing, cutting, and polishing, Graff has revealed the 302.37-carat Graff Lesedi La Rona, the principal stone cut from the historic 1,109-carat Lesedi La Rona ...

The gem's D color grade (meaning colorless) is the highest end of the GIA color scale. It is rare for any diamond to achieve this, much less one of more than 300 carats. While Graff noted its high ...