Last name Diaman (Diaman 
) , in all the world, is a rare cognomen. The cognomen Diaman is habitual in Cameroon, where it is a rare surname, Philippines, and Algeria. Not in comparison with a country's population, it is commonest in Philippines, Indonesia, and Cameroon. Very seldom, Diaman is the forename as well as the last name.
| n. a. diaman American photographer and author of LGBT science fiction novels (1936- ), US (b. 1936) |
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