[1][2] The Baja California collared lizard is a large-bodied species of lizard with a broad head, short snout, granular scales, and two distinct black collar markings.

The collar markings are separated at the dorsal midline by more than 12 pale scales.

Young lizards look similar to adults, but with more distinct banding.

The males of this species have enlarged postanal scales, a blue-grey throat, and large dark blotches on their flanks.

[3] No major threats to C. vestigium have been identified, and it occurs in several protected areas.