Blue Topaz Cubic Zirconia Stud Earrings .925 Sterling Silver December Birthstone Basket Setting Round Blue CZ The Photos show the 6mm studs, enlarged to show detailEarrings are crafted in .925 Sterling SilverUnisex – perfect for men, women or childrenEarrings are fastened using standard butterfly pushbacksAAA Grade Cubic Zirconia StonesBlue Topaz CZ StonesBlue Topaz is the December BirthstoneBasket Setting – Huge Upgrade over Prong SettingBasket Setting is the best way to secure a stoneAvailable in sizes 2mm-10mmLarger sizes have more Blue, smaller sizes have MUCH less blue look more Clear with a hint of Blue!!A millimeter mm is approximately the width of a credit card. (i.e. 2mm-4mm are very small)25-SSE-BTRDBKPB