FREETOWN, Sierra Leone (Reuters) — Sierra Leone rejected a bid of over $7.8 million for one of the world’s largest diamonds at an auction on Thursday (May 11). The 706-carat gem is the second-largest ever discovered in the West African country and was unearthed in March in the eastern Kono region by a Christian pastor who gave it to the government to handle the sale. Five bids were handed to auctioneers in a sealed brown […]