Metal: 18k Gold Vermeil on Recycled Sterling Silver Charm Dimensions: 7.4mm x 4.9mmGemstone: MalachiteWeight: 2.9g S/M:7.2inch with continuous extension from 6.2inch to 7.2inchM/L: 8.4inch with continuous extension from 7.4inch to 8.4inchProduct Code: GM-G-B6-MAL