Abstract: A plummet decoration comprises a ring, a plummet and a necklace. The ring has at least one first buckle and one second buckle. The plummet includes at least one plummet frame and the plummet frame includes at least one insertion portion. At the connection of the plummet of the ring; the plummet is installed with a first groove and a second groove corresponding to the first buckle and second buckle. The first buckle and second buckle are capable of being embedded into and detached from the first groove and second groove. After the ring is detached from the plummet, the necklace can be inserted into the insertion portion of the plummet.