Made with a thick layer of tarnish free gold on 316L stainless steel Ethically sourced black onyx semi precious gemstone 100% waterproof Hypoallergenic Net weight 3.4g Adjustable, the ring tightens or grows: from size J-N Ring height: 6mm Dimensions of the pendant: 10 x 10 mm 2 YEAR QUALITY GUARANTEE Luxury eco gift packing