The invention relates to a decorative part (1, 3, 5) including several stones (2) and a device (7, 7′, 47, 47′) for securing the stones (2) in relation to each other. According to the invention, the securing device (7, 7′, 47, 47′) includes a single electrodeposited base (9, 9′, 49, 49′) whose shape matches one part of the stones, thus allowing all the stones (2) to be attached in relation to each other without any stress, and the girdles (6) of the stones (2) are mounted edge-to-edge in relation to each other so that the single base is concealed. The invention also relates to the method for manufacturing a part (1, 3, 5) of this type.