Although I can find credible reference and photos of a pale pink form of the normally yellow Carpobrotus edulis, I haven't found any photos or evidence of stamens, anthers, pollen or stigma that is not yellow. I too, am guessing it is not a Delosperma (but something related), but am wondering if it is Carpobrotus edulis, since all of the sexual parts (the center of the flower) are magenta.