Serinity sew on crystals Peardrop (3230) in Emerald are loose flat backed crystals that come with a thread hole, enabling the crystals to be sewn onto fabric. Serinity Peardrop shaped crystals feature a tapered traditional pear shape with a rounded bottom and a pointed top, resulting in a symmetrical and elegant appearance. The crystal's faceted surface is carefully cut to create a stunning and brilliant shine that sparkles from every angle.