Metal: 18k Recycled Gold Vermeil on Recycled Sterling SilverDimensions: Charms 4.9mmGemstone: Rainbow MoonstoneWeight: 2.89g S/M:7.2inch with continuous extension from 6.2inch to 7.2inch M/L: 8.4inch with continuous extension from 7.4inch to 8.4inchProduct Code: GM-G-B6-RBM