This is a pendant showcasing one of the most important graphs in the study of Graph Theory --- the Petersen Graph. This pendant was crafted so that the edges in the center weave around each other in order to not intersect.
Now with earrings in the same collection:
A matching pair of Complete Graph Earrings (K_5) or
Complete Bipartite Graph Earrings (K_{3,3}), or instead one of each in the pair of
Forbidden Subgraph Earrings.