"18kt Gold Filled Cross Charm Necklace Chain Options and Lengths are available below. Chain thickness is between 2-2.5mm. For KIDS: We recommend 16\" For MEN: We recommend 24\" Chain can have a .5\" variation. Please size up if necessary. Top to Bottom: Option 1: Curb Chain Option 2: Rope Chain Option 3: Mariner Link Material: 18 Karat Gold Filled, Hypoallergenic. Tarnish Resistant. Gold-filled does not de-laminate or peel like Gold plated Jewelry nor does it tarnish as readily as silver. Genera Mens Cross Necklace Gold, Crucifix Necklace Mens, Gold Crucifix Necklace Men, Gold Chain With Cross For Men, Men’s Crucifix Necklace, Cross Necklace For Men Gold, Cross Jewelry Men, Men’s Gold Cross Necklace, Gold Cross Chain For Men