In its crested and variegated shape, G. baldianum is a unique specimen and strongly sought after by collectors: its fan-shaped crest and the yellowish spots of the variegation give it an attractive and much appreciated look. It has well marked ribs, divided into tubercles from which come out woolly areoles. Its spines are long, curved and of light brown-grey colour and during the growth they get reddish tonalities at the base. During the flowering period, early summer, this Gymnocalycium gives us wonderful funnel-shaped flowers with shades ranging from purple-red, orange and white.