The leaves of Crassula cultrata are opposite, oblanceolate (lance-shaped, wider near the tips), sessile (without stalks) and with neatly rounded tips. The leaves are thinly succulent or fleshy. Leaf measurements are usually around 5 cm long and 2 cm wide. The margins are often red and hard or horny. The meaning of cultrata is knife-shaped, referring to these blade-like margins and flattish surfaces. Leaf surfaces are hairless, shiny and fresh green to yellowish green with an occasional attractive tinge of orange.
The top of stem structures display an oblique positioning of the leaves, one pair being slightly folded in while the other is extended widely. Old leaves drop off deciduously (Vlok and Schutte-Vlok, 2010; Bond and Goldblatt, 1984; JSTOR).