The Twin glass seed bead from Czech brand Preciosa Ornela features a two hole design that lends itself to an amazing variety of design uses. Its oval shape measures 2.5x5mm and is available in two glass base materials: crystal and black. The factory has also added to these bases a wide range of durable color finishes, creating a variety of color effects and finishes. Sold loose in packages of 1/4 kilo.