Antique one-of-a-kind Venetian-made chevron glass bead, some with brick red core,  with blue, greyish-white and brick-red stripes. One layer is transparent glass, while the other layers are opaque. From the 1700's or earlier, made for trade in West Africa. Size is 14mm long x 14mm diameter with 2mm hole. Price is for one unique chevron. This is a highly collectible bead, especially for chevron collectors!