Material: 925 sterling silver post, hypoallergenic, tarnish resistant,nickel-free,lead-free,cadmium-free,comfortable and safe,suitable for long-term wear,perfect every day earring set for sensitive ears. Our Opal earrings are made of premium synthetic Opal, not a layer of plastic, Opal is October’s Birthstone

Stone Sizes: 2mm,3mm,4mm,5mm,6mm,7mm