The De Beers diamond is the fourth largest cut diamond in the world.

It was not long after De Beers Corporation started mining diamonds that their first major discovery surfaced. A stone weighing 428.5-carats was unearthed from the Kimberly mines of South Africa.

After its cutting, the De Beers diamond was unveiled at the Paris Exhibition of 1889. Enthralled crowds lined up to see what, at 228.5 polished carats, was believed to be the largest cut diamond in the world.