Sierra Leone's diamond production dropped to 28,110 carats in April 2011, a decline of 33% from March, the nation's central bank reports.

The diamonds produced included 15,030 carats of gem-quality stones and 13,080 carats of industrial grade diamonds.

In 2009, Sierra Leone was the second-largest diamond producer in west Africa, after Guinea.

Gold production also declined, dropping 18% from March 2011.