Miyuki 11/0 Seed Beads - Picasso Opaque Cobalt 11-4518. Also known as glass rocaille beads, Miyuki seed beads are known for their uniform round shape that allows for greater accuracy in beading designs. These high quality, durable beads are made out of Japanese glass and come packaged in tubes for easy storage and organization. Get ready to create endless stringing, stitching and bead weaving projects with our large selection of colors, hues and finishes. Miyuki 11/0 seed beads come in 14g tubes containing approximately 1500 beads.