World's largest gold coin minted, Pining for something ridiculously expensive? Perhaps a blinged up iPad 2 or a posh camper? There's a single coin that can afford all those…and more. The world's largest gold coin was recently unveiled by the The Perth Mint in Australia to mark the opening of the Commonwealth Heads of Government Meeting. Weighing an astounding one ton (or 2204 lbs.), it is enormous not only in size, but also in value; the coin's value tops $57.34 million based on current gold prices.