Beautiful Preciosa Czech Pressed Glass Trigon Beads 12x11mm Trigon Beads Pressed Glass beads are one of the oldest types of beads, dating back over 300 years. Pressed glass beads are formed by pressing a heated glass rod into a mold. No other glass bead type displays the breadth of range, nor has ever been produced on such a mass scale as Pressed Glass Beads. 

Preciosa Ornela Traditional Czech Pressed Glass Beads come in so many varied and versatile shapes, sizes, styles and colors, your design possibilities are nearly boundless. Aurora Borealis Finish Beads are beads that have an added iridescent coating. The coating is used on beads and rhinestones and produces a multi color light reflection. The Aurora borealis means "northern lights". The iridescent surface occurs when a very thin layer of metallic atoms are deposited on the lower surface of the stone. The process was invented by the Swarovski Co & Christian Dior in 1955.