earthstory:

The Rosser Reeves star ruby.

Reputed one of the finest in the world, this 138.7 carat beauty graces the collection of the Smithsonian museum of natural history. Its quality is exceptional in all three main factors, colour, transparency and sharpness of asterism (as the star phenomenon is called). It was donated to the museum in 1965 by an advertising mogul, after whom it was named. When he bought it, the stone was scratched and therefore slightly recut from 140 carats, better centering the star in the process.

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