Material: copper, resin, natural agateRing inside diameter:about 17mm,18mm,19mm(USA size)Please measure the size before buying, thank youWeight:appx 24gPackaging: Gift BoxOrigin: CN(Origin)Onyx Agate Rings:The rings are used natural onyx to made, so every single ring has a unique and different texture.Our Jewelry products are tarnish-free, nickel-free, lead-free, and cadmium-free, which is not harmful to your health. Tarnish-resistant and will not easily change color.Wide Application:The Onyx Rings can be as a Wedding Ring, you can wear it for Wedding, Party, Graduation, Father's Day, Anniversaries, Birthday, Engagement, Ceremony, Meeting, Dating and Daily wear.Best Gift:The onyx ring was an Eye-Catching gift for families, partners, lovers, and yourself item comes with an original jewelry GIFT Bag. Perfect for gift giving to someone special or keep for yourself.