Calculation: For example, if you have a 14k gold necklace weighing 33 grams and the current market price of gold is $1,940 per troy ounce: Dividing the troy ounce value ($1,940) by 31.1 gives us a per gram value of $62.38 for pure (24k) gold. $62.38 multiplied by . 583 gives us a per gram price of $36.37 for 14k gold.

What is the right amount to receive for your gold? If you're selling Gold Jewelry, a reasonable settlement would be 70% to 80% of the market value. If you're selling Gold Coins a reasonable settlement would be 90% of the market value.

As a general guideline, expect to get 55 to 75 percent of the total gold value (assuming the piece is in good shape). So, if your necklace contains about $420 worth of gold, a fair offer would be $231 to $315. Another way to calculate it is to reduce the per-gram value by 25-45 percent.