About 1 ounce
Gold is priced in troy ounces of 31.1035 grams — about 10% heavier than the ordinary (avoirdupois) ounce of 28.35 g. The spot price quoted by markets is for one troy ounce of pure gold, and most bullion coins (Krugerrand, Maple Leaf, Britannia, American Eagle) contain one troy ounce.
Prices on this page are the value of the metal at the international spot price. Shops and dealers add premiums, making charges and local taxes; buy-back prices are usually below spot.