NUOLUX 2pcs Diamond Curtain Holdbacks Drapery Tiebacks Hook with Screws (Silver) This is Crystal Diamond Door Wall Tassel Hook Holder, Curtain Drapery Holdback Tieback. Color: Silver. Material: Zinc alloy. Add a touch of elegance to any room with this set of classic curtain hooks. Delicate and unique shiny big faux diamond design. Excellent match for traditional, classical or even modern themed rooms. Also can be used to hang your hat or clothes.