Serinity sew on crystals Cosmic Baguette (3255) in Jet UNFOILED are loose flat backed crystals that come with a thread hole, enabling the crystals to be sewn onto fabric. Serinity Cosmic Baguette shaped crystals feature a rectangular shape with a raised centre that creates a 3D effect. The crystal surface is intricately cut with multiple facets, resulting in a dazzling sparkle. The Cosmic shape is designed to resemble a cosmic explosion or a small galaxy, making it a distinctive and captivating element in any design.