China Gold coin is the most expensive in the world is value of 100,000 Yuan. Only 29 have been struck for the entire world and all have been sold. Gold Coin is weight 1O kilo of .9999 Fine gold is a staggering 321 once, more than 22 pounds and is more than a half-foot in diameter. It is the largest gold coin and rarest as well. This Gold coin is to commemorate to 2008 Olympics games.