Fake Product review: a product jewelry 1

Hi I was interested in buy some jewlery. So I saw something I liked to buy. I made contact with seller he said it was real gold not fake. Since I always had good experience on let go. I assumed he was telling the truth. I got home wife wasnt too sure it was real. We went and got it tested it was fake. Tryied to call the seller. Seller doesnt answer.