Made with waterproof stainless steel, you will never have to worry about green fingers, fading or tarnishing ever again. Waterproof & tarnish-free Stainless steel 18k gold plated Natural stone Hypoallergenic, lead & nickel free US/Canada Ring Size UK/AU Ring Size Inside Diameter (mm) 6 L 16.6mm 7 N 17.2mm 8 P 18.1mm If you aren't in LOVE with your purchase, please let us know within 30 days of receiving your item, and you'll receive a stress-free refund.