Necklace 18k Flat Mariner

Exlusive chain "18k" indicates that the chain is made of 18-karat gold, which means it is composed of 75% gold and 25% alloy metals, which is 4 millimeters, 27cm, 8.20gr. If you are looking to purchase such an item, you would likely want to visit a reputable jewelry store or an online retailer specializing in fine jewelry.