Black Plated Crystal Beads Are 8 Mm In Size, Pricing Of Our Crystal Glass Beads Is Made On 1 Sequence. There are 72 pieces in a string of crystalline glass beads. When you choose 1 piece for the quantity part, it will come to you as 1 series. You can make your purchase by entering the number of series you want. With Crystal Series Glass Beads, you can use it in the making of Rosary, Bracelet, Necklace and Many Similar Jewelry and Accessories.