The 50-gram gold ingot weighs just over 1.5 Troy ounces and feels very solid in the palm of your hand. The price per ounce is definitely lower than that of smaller bars, which can make a larger bar like this cheaper than buying 50 1-gram bars or 5 10-gram bars. Spot gold prices are quoted as the price of 1 troy ounce of. This means that you can usually buy an ounce of gold ingots for about this price plus the dealer's premium.
A gold certificate is basically a piece of paper that indicates that you have a specific amount of gold stored at an external location.