Tiffany & Co. Elsa Peretti Signed Cobalt Blue Glass Heart PR09ZV Black Gold is a stylish and timeless piece of jewelry. This signature heart-shaped pendant features a vibrant cobalt blue hue with a black gold finish. The piece is a signature design from renowned jewelry designer Elsa Peretti and is crafted from high-quality materials. Customers who have purchased this piece have praised its eye-catching design, sturdy construction, and overall quality. Many reviewers have also noted the excellent customer service and fast delivery times.