Question: how many grams is my gold necklace?
Answer: Determining the Weight of Pure Gold in a 14K Necklace Simply multiply the necklace's weight by its gold content percentage, which we already calculated to be 58.3%. For example, if you have determined that your necklace weighs 8 grams, then the pure gold in it will be 58.3% of that number, or about 4.7 grams.