The earring hooks and connector rings on these earrings are silver plated. The blue beads are Czech fire polished beads. The bead dangling from the bottom is a clear Swarovski crystal. The diameter of the earrings is just over 1/2" and the length from the bottom of the earring hook is 1". The earrings include plastic backs. I also include a free handmade jewelry bag with every jewelry purchase. I don't charge for shipping within the 48 continental United States. If you live outside of that area, please message me and I can give you an estimate on shipping costs. Thanks for shopping!