Cullinan delivers another enormous blue diamond for Petra

Petra Diamonds has announced the discovery of an almost unbelievable 41.82-carat natural blue diamond from the legendary Cullinan Mine in South Africa. Early images and information from Petra suggest it is of exceptional color and clarity, placing this stone squarely among the most important blue diamond discoveries of all time.

Blue diamonds already occupy the rarest tier of natural gemstones. A blue diamond of this size, recovered from one of the world’s most storied mines, immediately invites comparison to some of the most valuable diamonds ever sold.