Diamanda \di(a)-man-da, diam(a)-nda\ as a girl's name is a variant of Diamond (English), and the meaning of Diamanda is "of high value, brilliant". The baby name Diamanda sounds like Diamanta, Demanda and Diamante. Other similar baby names are Dianda, Amanda, Damiana, Deanda, Darinda, Dimona and Ramonda.