1pce Antique gold cross Tarnished chain. Ask for polish. Will decrease value

Old gold cross simple stunning design with Jesus hanging. Tarnished chain. Ask for polish. Will decrease value....read This was my grandmother's. I am in my 70s. There is no way to appraise original value as others have on "similiar listings." The crosses gold has held up will. Although beautiful, the chain has tarnished. Polishing decreases value of anything vintage or antique. This is antique. I do not know the k. I imagine 14k. I am pricing low to sell as I have everything I've listed on this app. if interested, please ask for measurements as one must slip it over one's head.