The pattern of this series are named brilliant,designed with beads by designer. [size] Diameter of earrings about 10mm [Material] alloy. Japanese-made beads. Swarovski rhinestone [how to keep it] clean the surface of the dust, sweat, and put it in the zipper bag [delivery way] Only by post.(Registered Air-Parcel) If you require faster shipping time, please send us a Pinkoi message.