If you want to grow a unique houseplant, we recommend string of pearls (Senecio rowleyanus). This low-maintenance succulent has green foliage that resembles small pearls strung together.

They have also introduced a new type of culturing, nucleating with small tissue-nucleated pearls. Some of China's new pearls are all-nacre, some have nacre-coated nuclei, all are unmarked.

What is a natural pearl, and how are they formed? Natural pearls form when some kind of irritant, usually a small organism, makes its way into the shell of a mollusk like an oyster or a mussel.