How to dig for diamonds?

Best place to dig for diamonds in america?

• the best answer should include more than one suggestion. (and i am familiar with the crater of diamonds in arkansas, however that is the only place in america i am familiar with.) thanks.

• Answer:

  In the U.S., diamonds have been found in Arkansas, Colorado, and Montana.[45][46] In 2004, the discovery of a microscopic diamond in the U.S. led to the January 2008 bulk-sampling of kimberlite pipes in a remote part of Montana.[46]