Unlike the related Crassula ovata (more commonly-referred to as 'jade'), C. arborescens has rounded, red-edged, gray leaves shaped like "silver dollars" or "cookies".

Older shoots have a yellowish-brown bark that peels off that are divided into individual sections at the nodes.

They are glaucous in color, have a powdery coating and are spotted with clearly visible water gaps.

[3][4] The terminal inflorescence consists of thyrses that are rounded at the top and is 5 to 8 centimeters high.

Generally, even once dried, they remain attached to the plant and the seeds, which are small in size, will then be dispersed by the wind.