Castlecliff is a fashion brand that was founded in the 1940s by Clifford Furst and his wife Helen. The brand is known for its vintage-inspired jewelry designs, which feature bold colors and intricate details. Castlecliff jewelry has been worn by celebrities such as Marilyn Monroe, Elizabeth Taylor, and Jackie Kennedy. The brand has also been featured in magazines such as Vogue and Harper's Bazaar. Castlecliff continues to create unique pieces that are both timeless and modern.