Black Velvet Necklace Chain Jewelry Gift Box Showcase Displays Kit 36 Pcs. This 36 Piece Kit Includes Black Velvet Necklace Chain Jewelry Gift Box Showcase Displays. Black Velvet Necklace Boxes For Jewelry Displays, Showcases & Countertops. This is a new set of black velvet necklace boxes. These velvet boxes have metal hinges. The inside of the boxes are lined with satin and velvet. These boxes add a touch of elegance and beauty to any gift or store display. All include a two piece white outer gift box for easy wrapping. Each measures approximately 4 1/4″ x 7″ x 1 5/8 (108 x 178 x 41 mm).