The new Rock Season collection from the Brazilian jeweler H. Stern blends romantic nature motifs with subversive punk-rock elements like spikes and darkened metal. The result is a range of butterflies and birds set in striking darkened gold and rose gold with diamond accents that recall the intricate and idyllic jewelry of the Victorian era.

The items in the Rock Season collection (starting at $1,700) depict the different seasons through animals in flight. Summer and spring are represented by butterflies in…