"Conflict" diamonds, also known as "blood" diamonds, are rough diamonds used by rebel movements or their allies to finance armed conflict aimed at undermining legitimate governments.

Press material for the movie "Blood Diamond" lists suggestions for consumers who are purchasing a diamond:

The Fifth "C" for Consumers

Diamond buyers are told to consider the "4 Cs" when selecting a diamond: color, cut, clarity and carat weight. But there is one more "C" to ask about before making a purchase. It stands for conflict.

Amnesty International and Global Witness have a pamphlet to help consumers ensure that diamonds never again fund conflict. When shopping for diamond jewelry, they can ask the salesperson four questions to find out what the retailer is doing to help prevent the trade in conflict diamonds:

How can I be sure that none of your jewelry contains conflict diamonds?

Do you know where the diamonds you sell come from?

Can I see a copy of your company's policy on conflict diamonds?

Can you show me a written guarantee from your diamond suppliers stating that your diamonds are conflict-free?

The diamond industry and participating governments are self-regulated through a system called the Kimberley Process, through which legitimate, rough diamonds gain international certification. Learn more at www.kimberleyprocess.com.