4mm Sky Blue Opal, Czech Machine Cut Round Crystal Beads, 36 pieces Superior Quality Czech Crystal Beads, style # 451-19-602 Machine Cut Round Beads Size 4 millimeters (about 0.16 inch). Please see second image for size comparison. Packed by 36 pieces in a PE bag with hang hole Color: Sky Blue Opal #31000. Please note: Images are for informational purposes only. Colors on your screen are affected by monitor settings and different web browsers. Slight changes in shades are unavoidable. Merchandise ships directly from manufacturer's warehouse in RI, USA. "Crystals and Beads for Friends" offers free shipping for orders over $25.