4mm, 600 pcs, Crystal AB, Preciosa Czech Fire Polished Round Faceted Glass Beads, Aurore Borealis Superior Quality Czech Glass Beads, style # 152-19-001 Round Fire Polished Beads Machine faceted glass beads that are polished by fire. They are brilliant, scratch resistant and with softer, slightly rounded facets. Cost efective, superior quality beads. These beads are usually produced in smaller batches, therefore sizing and shape may vary slightly. Size 4 millimeters. Please see second image for size comparison. Color: Crystal coated with AB. Please note that color deviations due to natural properties of glass cannot be avoided. Color shade may change by different lots of raw glass material. Larger sizes tend to be darker due volume of material used. 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. Select multiple items from "Crystals and BFF" to get combined or free shipping.