Miyuki seed beads come from Japan's original seed bead manufacturer. Discover why Japanese seed beads have become so popular as trusted jewelry making and craft supplies. These size 8 beads (approx. 3mm) are known as "Unions" because they are the union of Japanese Miyuki seed beads and Czech coatings. The uniform size and shape of Miyuki seed beads make them an excellent choice for beadwork. The Czech glass finishes add spectacular color effects! We think these make excellent spacer beads for all types of strung designs. Depending on the angle, sometimes they look like a glass bead, and sometimes they look like a rounded metal heishi bead.