This necklace by Mounser has an interesting creation story:

The Lunar Study in Sterling collection marks our inaugural foray into sculptural sterling silver.  Through Amanda’s stream of conscious drawing process, silhouettes were developed based on the shape shifting phases of the moon’s appearance as it cycles.

The pieces are meant to signify metamorphosis, evolution and transcendence, drawing on the idea that as life cycles there is endless possibility for renewal.

Leather cord necklace with sterling silver sculptural puffed crescent pendant in high polish finish.

This is priced at USD$407.