The leaves of stonecrops are fleshy and exhibit a wide variety in shape and size, often appearing as flat to cylindrical forms. They may be opposite, whorled, or alternate along the stem. Their dimensions can range significantly by species, generally measuring between 0.4–2 inches (1–5 cm) in length. The surface can be smooth or bear subtle teeth, with colors varying from green to blue-gray or reddish hues, and possessing a prominent vein pattern for nutrient transport.

The flowers of stonecrops are small, typically ranging from 0.2 to 0.4 inches (0.5 to 1 cm) in diameter. Each flower features 4-6 star-shaped petals and an inflorescence forming in cymes. Notably, the flowers have twice as many stamens as petals. Colors vary widely among species, from white and pink to vibrant reds and yellows. The flowers usually exhibit a mild scent and bloom during the summer months, providing a delicate yet colorful display.

The stems of stonecrops are distinct, presenting in an erect, decumbent, or tufted manner. These stems are generally glaucous, exhibiting a bluish-green hue, and are fleshy, contributing to the plant's succulent nature. The thickness of the stems varies but tends to be robust, reflecting their ability to store water. Branching patterns can vary, often irregular, enhancing the plant's resilience. Measuring approximately 2-12 inches (5-30 cm) in height, these stems are a key feature for identification.

The fruit of stonecrops manifests as a follicular structure, which can be either membranous or exhibit a leathery texture. This fruit retains a significant feature as it is frequently encircled by a corolla that remains persistent and membrane-like. It prominently splits open along the inner, or adaxial, side. Encapsulated within are numerous seeds that are characteristically minute, each usually enveloped by nourishing, fleshy endosperm. While exact dimensions and coloration are not specified, these tiny seeds are a pivotal identification trait of stonecrops's fruit.