The fifth largest known diamond in the world was recently unearthed by workers in Lesotho's Letšeng mine. At 910 carats the rough stone weighs 182 grams, or roughly 0.4 pounds, and is the approximately the size of two large golf balls. The diamond is D in color (the best you can get) and type IIA. Only about 1 to 2 percent of all of the diamonds in the world are considered type IIA, being practically transparent in ultraviolet light.

“Since Gem Diamonds acquired Letšeng in 2006, the mine has produced some of the world’s most remarkable diamonds, including the 603 carat Lesotho Promise, however, this exceptional top quality diamond is the largest to be mined to date and highlights the unsurpassed quality of the Letšeng mine,” Clifford Elphick, Gem Diamonds’ Chief Executive Officer, said in a statement. “This is a landmark recovery for all of Gem Diamonds’ stakeholders, including our employees, shareholders and the Government of Lesotho, our partner in the Letšeng mine.”