10K Genuine Solid Yellow Gold Cuban Necklace Chain. 100% GUARANTEED 10K YELLOW GOLD. Professionally tested and stamped 10K for Purity Authenticity. Guaranteed purity of the gold to be 10K, and NOT PLATED, NOT FILLED. Gender Neutral: Will look great on men and women.Because your satisfaction is our priority. If you're not completely satisfied with your jewelry, please send it back to us (including all original packaging) within 30 days. Please let us know if you need anything else or have any questions. We will try our best to reply as soon as possible, usually within 24 hours or less.