Olympic gold medals were made of pure gold until 1912. Nowadays, the gold medal is actually only gold-plated: it is made of 92.5 silver, covered in 6 grams of real gold.
no it is fake
If it were gold it be valuable, so no.
i would say that they are more of a shiny orange than a gold. But some goldfish can be more yellow/gold.
no they are wood