Castlecliff is a historic New York-based jewelry brand founded in 1918, known for its bold, sculptural designs featuring vibrant rhinestones and intricate metalwork. Revived by designer Stephanie Schwallie, the brand now focuses on sustainable luxury, with all pieces handcrafted in NYC using upcycled materials and recycled metals. Castlecliff’s modern collections blend mid-century aesthetics with contemporary craftsmanship, staying true to its legacy while embracing sustainability​.