DIY Jewelry Making Round Blue Opal Imitation Glass Beads Strand, 4MM One strand of round opal imitation beads 4 mm size; Full dirlled 0.8mm hole The strand is 15.5 inches long, about 95pcs beads total There may have 2 to 3 pieces of deviation The color and transparency are similar as natural opal gemstone Used for making earrings, pendants, necklaces and other decorations