The DRC also has more than 30 % of the world 's diamond reserves .
The Democratic Republic of the Congo ( DRC ) has 70 % of the world 's coltan , a mineral used in the production of tantalum capacitors for electronic devices such as cell phones .
The DRC also has more than 30 % of the world 's diamond reserves .
The Democratic Republic of the Congo ( DRC ) has 70 % of the world 's coltan , a mineral used in the production of tantalum capacitors for electronic devices such as cell phones .