The Cartier Engagement Double Rings box is a luxurious gift box designed for Tiffany & Co. This square-shaped box is perfect for storing and displaying two pieces of jewelry, such as engagement rings. The box features a blue velvet lining and is made from a combination of faux leather, paper, cardboard, plastic, and velvet materials. It also comes with additional jewelry packaging, a travel jewelry case, and is suitable for both men and women. The box is a stylish and practical way to present a special gift to someone you love.