The leaves of Crassula coccinea are shiny pale green to yellow green, flat on top, broad and oval in outline. Leaf tips are pointed and the bases sessile. The leaves closely overlap each other in a symmetric pattern of opposing pairs.
A mature plant may have several branched, erect stems. In bloom the plant reaches 60 cm in height.
The fragrant flowerheads grow at the stem tips in dense clusters. The individual flower is long tubed with five oval, scarlet petals opening widely at the mouth. Yellow anthers protrude slightly from corolla mouths in the flat-topped head. Blooming happens in summer and early autumn.
An uncommon white variety exists, also on Table Mountain (Manning, 2009; Clarke and Mackenzie, 2007).