Preciosa Crystals are based in Jablonec nad Nisou in Northern Bohemia, Preciosa is the premier manufacturer of Czech crystal. Their crystal beads contain about 30 percent lead and get kudos for cut and clarity. They’re refreshingly priced for such a fine product. Learn more at preciosa-ornela.com. Bring sparkle to your projects with this gorgeous octagon shape. Have your sun-catchers/dream-catchers standing out from the rest with these Preciosa Crystal Octagons - you cant go wrong. These crystals also look great as earrings.