What Is My Gold Necklace Worth?
How-To Guides
If you are asking "what is my gold necklace worth?", the answer comes down to three things: how much it weighs, how pure the gold is, and today's gold price. Learn the simple formula and you can value any chain or pendant yourself.
Step One: Find the Karat
Look closely at the clasp or one of the end links, where you will usually find a tiny stamp. Common marks are "14k", "585", "18k", "750", "10k", or "417". That number tells you how pure the gold is, which is the heart of the calculation.
| Karat Stamp | Marked As | Gold Purity | Purity Factor |
|---|---|---|---|
| 24k | 999 | 99.9% | 0.999 |
| 22k | 916 | 91.7% | 0.917 |
| 18k | 750 | 75.0% | 0.750 |
| 14k | 585 | 58.3% | 0.583 |
| 10k | 417 | 41.7% | 0.417 |
If the stamp is worn off or you are unsure, our guide on how to read gold hallmarks and stamps helps you decode it, and how to tell if gold is real covers quick tests when there is no mark at all.
Step Two: Weigh the Necklace
Place the whole necklace on a small digital scale and record the weight in grams. Chains can be surprisingly light, so even a tenth of a gram matters. For a careful, accurate reading, follow how to weigh your jewelry at home.
Step Three: Do the Melt Math
Gold is priced per troy ounce, and one troy ounce equals 31.1035 grams. Here is the formula:
- Gold price per gram = spot price per ounce divided by 31.1035.
- Pure gold in your necklace = weight in grams times the purity factor.
- Melt value = pure gold grams times the price per gram.
A Worked Example
Imagine an 18k gold chain weighing 12 grams, with gold at a sample price of $2,400 per troy ounce.
- Gold per gram: $2,400 divided by 31.1035 = about $77.16.
- Pure gold: 12 grams times 0.750 = 9 grams.
- Melt value: 9 grams times $77.16 = about $694.
If that same 12 gram chain were 14k, you would use 0.583 and get about $540. Heavier chains add up fast, which is why weight and karat together tell the story. Let our scrap gold calculator handle the arithmetic, and check the live gold charts for today's price, since it shifts daily.
When a Necklace Is Worth More Than Melt
- Pendants with gemstones. A diamond or colored stone pendant can carry value well beyond the gold.
- Designer or antique pieces. A signed or estate necklace may sell at a premium to collectors.
- Solid versus hollow. Many chains are hollow to save weight, which lowers melt value but keeps them wearable.
If you plan to sell, see how to price your jewelry for resale to set a smart asking price, and how to sell gold safely to avoid lowball offers.
Frequently Asked Questions
My necklace has no stamp. Is it still gold?
Maybe. Some older or imported pieces were never stamped, and some clasps replaced over the years lost the mark. Run a simple acid or magnet test, or have a jeweler check it. Our how to tell if gold is real guide explains the options.
Does the clasp or chain style change the value?
The melt value depends only on gold weight and purity, so style does not change it. But style, brand, and craftsmanship can raise the resale value above melt for the right buyer.
Why do two necklaces of the same weight sell for different amounts?
Usually because of karat. A heavier 10k chain can hold less pure gold than a lighter 18k chain. Design, condition, and brand also play a role in resale.
Once you know what your necklace is worth, keep that knowledge handy. BigStash.app lets you log each piece's karat and weight, attach photos, and watch its melt value update automatically as gold prices change.