This is a F1 Ariocarpus hybrid, kotschoubeyanus x bravoanus v hintonii.
I crossed these plants in 2008,and collect seeds in 2009.
I sowed seeds on 07/10/09 and grafted very young seedlings, 2 days after germination. Small type Ariocarpus will be in flower very early. It will be in flower in autumn when you grafted in spring if a seedling was grafted.
Own-root seedlings need 5 years at least from sown seeds to flowering.