They are symbols of affection - widely thought to be as pure as love itself - and the vast majority are legal stones that are mined, exported and sold in the clear light of day. But for years, some diamonds have been sold illegally - with devastating results linking to war, blood and brutality. In the diamond-rich West African nation of Sierra Leone, rebels have used the precious gems to bankroll a violent ten-year insurrection, leaving a terrorized population and a ravaged landscape in its wake. Join National Geographic from Europe to Africa to uncover the truth about the dark side of the diamond trade.