What can anyone tell me about my 1918 Buffalo Indian Head Nickel which is gold in color.?

You have to be more specific. Is a D, a D the the number 8 stamped over 7 in 1918 or is it an S? The nickel is made of 75% copper and 25% nickel. prices range from a dollar or so to over $30,000 dollars. it shouldn't be gold.