Large diamond finds always draw headlines, and the latest discovery of a 131.5-carat piece of white diamond rough in Angola stacks up favourably next to other impressive rarities like the Lesotho Promise (603 cts), the Letseng Legacy (493 cts), and the Leseli Letseng  (478 cts). West Perth, Australia-based Lonrho Mining recovered the stone from a bulk sample at its Lulo concession.