8mm Alexandrite (changing colors), Czech Machine Cut Round Crystal Beads, 12 pieces Superior Quality Czech Crystal Beads, style # 451-19-602 Machine Cut Round Beads Size 8 millimeters (about 0.31 inch). Please see second image for size comparison. Packed by 12 pieces in a PE bag with hang hole Color: Alexandrite #20220. Alexandrite is changing color - it is pale blue indoors and changes to violet in sunlight. 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.