This invention provides mechanical structures for the links to be opened and closed and further to prevent such links to flip with respect to adjoining links when the necklace is assembled. The undulating silhouette of each link provides space for the mechanical structures which are manually manipulated yet do not interfere with the ornamental appearance of the necklace. This is achieved by locating the mechanical structure on the rear or back of each link so the locking structures are hidden from normal view but is hidden in the undulating structure so that the links form a substantially flat plane on the rear or back, thus enabling the stable link necklace to lie substantially flat on the wearer's chest.

There are essentially three link elements, the large link 10 nominally being designated the "mother" link and small link 12 nominally being designated the "first baby" link. Each of those links has a different Socking mechanism which will be described hereinafter.

The concept of adding jewelry items to commemorate life events, as stated above, is well known in the art. On the other hand, the concept of providing undulating links locked together with the locking structure located in the rear of the links so that the bottom plane of the links when assembled is substantially flat, is not known or described in the prior art. Such flat rear plane is accomplished due to the undulating nature of the links providing room for such locking structures to be located within the plane.