Not quite as huge but with an equally mysterious history is the so-called Golden Maharaja, a pear-shaped diamond of fancy dark orange-brown color, weighing in at 65.57 carats.
Though advertised as Sunburst, which would have been a golden orange going to dark red at the edges, it was more yellowy, going to a sort of pink, so as soon as I got it home, I covered it with black Fablon.