A small globular cactus which, over time, tends to cluster at the base. It differs from G. mihanovichii for its color, in fact, this cactacea shows a red-purple color, due to the partial or total lack of chlorophyll. It has well marked ribs with clearly visible horizontal grooves and short white spines. In spring, it blooms with silky-like flowers of a pale pink or pink-purple color.