Botswana discovers 692.3 carat diamond

GABORONE, Aug. 22 (Xinhua) -- Lucara Diamond, a Canadian diamond producer, discovered a 692.3 carat white gem diamond from Botswana's Karowe Mine.

The diamond measuring 46.5 x 40.7 x 28.4 mm is described as a Type IIa high white gem and the 20th diamond larger than 100 carats discovered at Karowe, shortly follows the discovery of a 1,080 carat Type IIa white top gem earlier in this August, said Lucara Chief Executive Officer William Lamb.