L. gracilidelineata is a succulent exemplar with a particular and unmistakable look. The epidermis has a pastel grey colour to blend in with the surrounding environment, with small irregular brown spots. Its leaves are very fleshy, shaped like an inverted cone and are arranged in pairs, united at the base. Its beautiful yellow flowers bloom in the fissure from the two leaves. The name L. gracilidelineata comes from the Greek and literally means "from the appearance of the stone", to identify the peculiarity for which this little succulent is so loved: it is otherwise called "living stone", for its shape and for the colour that takes on its two leaves.