The following table shows common gold jewelry purities and their current value per ounce and per gram. Now you can quickly find the per gram melt value of gold jewelry including 10k, 12k, 14k, 18k, and 22k purities. The current per gram and per ounce prices for 24k pure gold and .999 fine gold are also provided as … Dubai Gold Rate – Price Today For 24, 22, 21, 18 Carat Gold International Gold Price - LBMA Gold Price - Gram. The LBMA Gold Price is the price for a troy ounce of pure gold. The Dubai retail rate quoted is for one gram of gold. There are 31.1034768 grams in a troy ounce. For comparison purposes, the LBMA Gold Prices for a gram of gold over the last seven trading days are shown in the table below.