Blood diamonds is a term used for a diamond mined in a war zone and sold to finance an insurgency, an invading army's war efforts, or a warlord's activity. The term is used to highlight the negative consequences of the diamond trade in certain areas, or to label an individual diamond as having come from such an area.
another term for conflict diamond. A conflict diamond is an uncut diamond mined in an area of armed conflict and traded illicitly to finance the fighting.