Preciosa offers high quality crystal sew on rhinestones in a range of shapes, sizes and colors. Available here are Preciosa Navette Sew On Rhinestones. The navette shape sew on stone offers simple yet elegant faceting. There are two holes for easy sewing. Navette shape is sometimes referred to as cateye. Preciosa crystals are made in the Czech Republic and are made of the finest quality crystal. Preciosa crystals offer illuminating sparkle and beautful faceting.