Eclogites occur in the Monte Rosa and Gran Paradiso Penninic nappes of the Western Alps as small bodies within metasedimentary rocks and, in Monte Rosa, rarely, as boudinaged dikes within late-Variscan granitoids. Minor but characteristic constituents of these eclogites are glaucophane and paragonite. Bulk composition of the protoliths ranges from basaltic to Fe-Ti basaltic. High-pressure assemblages comprising chloritoid, phengite, garnet ± kyanite, talc, Mg-chlorite and glaucophane also occur in micaschists of both nappes. The Early Alpine high-pressure assemblages postdate the intrusion of late-Variscan granitoids and are overprinted by the greenschist, mid-Tertiary Lepontine metamorphism. Garnet-clinopyroxene geothermometry and phase compatibilities suggest high-pressure metamorphic temperatures ranging from 440°C to 530°C in the Monte Rosa nappe, with pressure in excess of 8-10 Kb but lower than approximately 14 Kb. These conditions are in the same range as established for the overlying Piedmont ophiolite nappe and for parts of the Austroalpine basement nappe, implying a similar tectonomet-amorphic evolution during Early Alpine time. Garnet-omphacite pairs from the amphibole eclogites of the Gran Paradiso nappe yield lower equilibration temperatures (T ≃ 400°C), possibly recording a later stage in the P-T-t path of this unit.