Sterling Silver Pink Tourmaline Cubic Zirconia Stud Earrings October Birthstone Prong Setting Round Pink CZ The Photos show the 9mm studs Earrings are crafted in .925 Sterling Silver Unisex - perfect for man, woman or child Earrings are fastened using standard butterfly pushbacks AAA Grade Cubic Zirconia Stones Pink Tourmaline CZ Stones Pink Tourmaline is the October Birthstone Round Stones with 4 Prong Setting Available in sizes 2mm-10mm Size Recommendation: A millimeter mm is approximately the width of a credit card. (i.e. 2mm, 3mm, 4mm are very small) Larger size CZ's have bolder colors, smaller size CZ's have much less color saturation (look more clear-ish). 25-SSE-PIRDPRPB