Miyuki seed beads are top quality seed beads made in Japan. Rocaille shape. 22 gram tube of beads. Approximately 858 beads per tube. Length/Width: 3mm x 2mm. Hole size approximately 1.1mm. Aurora Borealis (AB) finish is an iridescent coating that looks like an oil slick. The base glass color of the bead does affect how the color of the finished appears.