Women's coat brooch with geometric diamond design, pearl, multifunctional

This brooch is designed for women and is used with coats. The main material is copper, with an electroplated surface finish. The shape is a diamond with a geometric design, and the design element features a pearl and pattern. The style is Japanese and Korean, fresh and sweet. Key features include decorative, multifunctional, waist gathering, dual-use, protection, and fixing.