fallback snapshot Aug 2, 2026 · current Gold API reference loads automatically
Sources and review: Reviewed by MeltOffer on . Reference price: Gold API XAU/USD. Unit factors: NIST precious-metals conversions. Karat terminology: FTC Jewelry Guides, 16 CFR § 23.3.
Compare up to three written buyer offers.
How to compare buyer quotes and published payout benchmarks.
21K gold value by weight
These server-rendered fallback values update with the same live or editable spot price and selected fineness as the calculator.
| Gross weight | Melt value |
|---|---|
| 1 gram | $113.76 |
| 5 grams | $568.78 |
| 10 grams | $1,137.57 |
| 20 grams | $2,275.14 |
| 31.1035 grams (1 ozt gross) | $3,538.24 |
| 100 grams | $11,375.69 |
What 21K gold is worth
21K gold is approximately 87.50% pure. Its melt value is weight in grams × 21/24 ÷ 31.1035 × the live gold price per troy ounce. The calculator applies that formula before showing buyer discounts.
Where 21K gold appears
21K jewelry is especially familiar in Middle Eastern markets. Its high gold content gives a rich color, while clasps, solder, stones, and non-gold additions still need to be excluded from melt weight.
875 is a recognized high-karat basis
Saudi Ministry of Commerce merchant guidance lists 21K / 875 among gold-workpiece standards and describes required karat and maker or importer marks. A stamp is still only one piece of evidence; test valuable or uncertain items.
The cost of pricing 21K as 18K
21K contains 0.875 gold by weight versus 0.750 for 18K. If a buyer prices genuine 21K at the 18K factor, the stated melt value is 14.29% below the correct 21K benchmark. Keep the test result and quote basis visible before comparing offers.
Melt value is the negotiating yardstick
Jewelry buyers pay below melt to cover testing, refining, shipping, and margin. Compare every dollar quote with the melt value and get at least three offers before selling.
Frequently asked questions
How much is 21K gold worth per gram?
The live melt value per gram is gold spot ÷ 31.1035 × 21/24. The calculator updates that amount when the live feed loads.
What percentage of pure gold is 21K?
21K gold is approximately 87.50% pure gold; the balance is alloy metal.
What marks identify 21K gold?
Common marks include 21K, 21KT, or 875. A mark is a starting point rather than proof, so uncertain or valuable pieces should be tested without damaging them.
Will a buyer pay the full melt value?
A buyer usually will not pay the full melt value. Scrap-jewelry buyers deduct their costs and margin, so compare offers as a percentage of melt.
What does 875 mean on gold?
It is a stated fineness of 875 parts gold per 1,000, equivalent to 21K.
Is 21K or 22K worth more per gram?
22K contains about 4.76% more gold per gram than 21K. 21K contains about 16.67% more than 18K.
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