Tacitus bellus) is a species of flowering plant in the stonecrop family Crassulaceae, native to northern Mexico.

It was discovered by Alfred Lau in 1972 in the states of Chihuahua and Sonora, at an altitude of 1,460 m (4,800 ft).

The leaves are glabrous, approximately triangular, 25mm long, and gray or bronze in color.

The plant is propagated by division of offshoots, rooting of individual leaves and seed.

Graptopetalum bellum has gained the Royal Horticultural Society's Award of Garden Merit.