I grew this mystery from one opf the reputable seedexs. The seed was labelled Cyrtanthus elatus, it flowered just days after Habranthus robustus but it has more colour. Maybe Rimmer or Jim can help out.
Second inspection non day 2 it appears to not be a Cyranthus but a pinker form of Habranthus robustus, source was SRGC2013/14-1266
johnw