Endiama E.P. (Empresa Nacional de Diamantes E.P.) is the national diamond company of Angola and it is the exclusive concessionary of mining rights in the domain of diamonds. Angola's state-run diamond company Endiama produced 8.55 million carats of diamonds in 2010.
Endiama's primary property is Catoca, which is a joint venture between Endiama (32.8%), Russia based ALROSA (32.8%), China based LLI (18%), and Brazil based Odebrecht (16.4%). Catoca is the seventh largest diamond mine in the world, and is estimated to produce over 7 million carats of diamonds in 2014 worth just under $1 billion.
Subsidiaries; links are to the (in Portuguese) subsidiaries' pages at Endiam's main site:
Endiama's mining operations, each of which is a company in its own right:
- Associacao Chitotolo (35% ownership) located in N'Zagi - Lunda Norte; besides mining, Chitololo is involved in education via its Projecto Educar
- Sociedade de Desenvolvimento Mineiro (SDM) , in Cuango, 50% ownership in association with Odebrecht in Brasil.
- Sociedade Mineira de Catoca/Catoca  32.8%, in association with Almazzi Rossi and Alrosa in Russia, Daumonty Financing Company in Israel and Odebrecht Mining Services in Brasil.
- Sociedade Mineira do Angola, Lda (20%)
- Projecto Fucaúma/Fucauma diamond mine  40% owned in association with Trans Hex and others;
- Projecto Luarica/Luarica diamond mine  38% owned in association with Transhex, Micol and others
- Sociedade Mineira do Lucapa/SML  51% owned by Endiama, 49% owned by Sociedade Portuguesa de Empreendimentos/SPE; operations are located in the Chicapa River and Luachimo River basins.
- Sociedade Mineira do Camatchia-Camagico/LUÓ  a joint venture formed in 2003 with Hipergesta, Angodiam and ESCOM-Alrosa/Espírito Santo and Alrosa.
- Chimbongo 
- Alfa 5  diamond production
- Projecto Yetwene 50% owned, in association with Mining BV/Grupo Lev Leviev; located in the Camissombo exploration area in the province of Lunda Norte.