diamantiferous,a.|ˌdaɪəmænˈtɪfərəs| [f. after mod.F. diamantifère, f. F. diamant diamond: see -ferous.] Diamond-producing. 1878in Academy 14 Sept., The diamantiferous sands of the valleys.1880Clerke in Fraser's Mag. 822 The diamantiferous districts of Brazil.