How Much Is 10K Gold Worth Per Gram?
10K gold gets overlooked. A lot of buyers skip right past it, thinking it's barely gold at all — "only 10 karats." That's a mistake. 10K gold is 41.67% pure gold, and at today's prices, a single gram of it is worth real money.
If you're buying scrap, 10K pieces are some of the best margin deals out there because sellers consistently undervalue them. If you're selling, knowing the value of 10K gold per gram keeps you from accepting lowball offers.
What Is 10K Gold?
10K means 10 out of 24 parts are pure gold — a purity of 41.67%. In the United States, 10K is the minimum karat that can legally be sold as "gold." Anything below it can't carry a gold karat stamp.
The remaining 58.33% is alloy metals — typically copper, silver, zinc, and nickel. These alloys make 10K gold harder and more durable than higher karats, which is why it's common in class rings, everyday chains, earrings, and budget-friendly jewelry. It holds up better to daily wear than 14K or 18K.
You'll see it stamped as "10K," "10KT," or "417" (the European marking representing 41.7% purity).
The Value of 10K Gold Per Gram Today
The price of 10K gold per gram changes with the spot price, so there's no single permanent answer. But the formula is simple and never changes:
10K gold value per gram = (Spot Price ÷ 31.1035) × 0.4167
At a gold spot price of $4,750 per troy ounce:
$4,750 ÷ 31.1035 = $152.72 per gram of pure gold
$152.72 × 0.4167 = $63.64 per gram of 10K gold
At $5,000 spot, that becomes $66.99 per gram. At $4,500, it's $60.29. The spot price is the only variable — the purity of 10K gold is always 41.67%.
Why 10K Gold Is Better Than Its Reputation
Here's what experienced scrap buyers know about 10K gold: the margins are often better than higher karats.
Sellers — especially people cleaning out jewelry boxes — tend to mentally dismiss 10K pieces. "It's only 10K" leads them to accept lower offers without doing the math. Meanwhile, the gold content is substantial. A 30-gram 10K gold chain at $4,750 spot has a melt value of $1,908.95. That's not pocket change.
Refineries don't care about karat snobbery. They pay based on pure gold content, and 10K gold refines just like any other karat. If you're buying at 75–80% of melt and the refinery pays 96%, your margin is the same percentage regardless of karat. But because 10K pieces are easier to buy cheap, your dollar-for-dollar return can actually be higher.
10K Gold Value by Weight
Here's a quick reference at a $4,750 spot price. Bookmark this, but always recalculate with today's actual spot price before making a deal:
1 gram of 10K gold: $63.64
5 grams: $318.18
10 grams: $636.37
1 pennyweight (1.555g): $98.96
1 troy ounce (31.1035g): $1,979.33
These numbers shift with the spot price. A gram of 10K gold has gained about $12 in value over the past two years as gold prices have climbed. If you've been sitting on 10K pieces waiting to sell, it's worth recalculating.
10K vs. 14K vs. 18K: Value Per Gram Compared
At a $4,750 gold spot price per troy ounce:
10K (41.67% pure): $63.64 per gram 14K (58.33% pure): $89.08 per gram 18K (75.00% pure): $114.54 per gram 24K (99.90% pure): $152.56 per gram
The gap between 10K and 14K is about $25 per gram. On a 20-gram piece, that's a $509 difference in melt value. This is why accurate karat identification matters — a 10K piece mislabeled as 14K leads to overpaying by nearly 40%.
How to Verify You're Actually Looking at 10K
Stamps are a starting point, but they're not always reliable. Here's how to confirm:
Karat stamps: Look for "10K," "10KT," "417," or "416." A loupe or magnifying glass helps on small pieces. Check clasps, inside of rings, and end caps on chains.
Magnet test: Gold is not magnetic. If a piece marked 10K sticks to a strong neodymium magnet, it's not solid gold. It could be gold-plated steel or a fake.
Acid test: A 10K acid test kit uses nitric acid on a scratch from the piece. If the mark dissolves, it's below 10K. If it stays, it's at least 10K. You can then test with 14K acid to narrow it down. A basic kit costs $15–20 and is essential for any serious buyer.
XRF analysis: The gold standard (literally). An XRF analyzer gives you an exact purity reading — not just "10K" but "41.2%" or "43.1%." If you're buying volume, access to an XRF machine (yours or a local jeweler's) pays for itself quickly.
What You'll Get Paid for 10K Gold
Where you sell determines how much of the melt value you keep:
Refinery: 95–98% of melt value. Best payout, but you need volume to justify shipping. Most buyers batch their 10K pieces and send when they hit a target weight.
Coin shop or gold dealer: 70–85% of melt. Varies widely. Call ahead and ask what percentage of melt they pay for 10K — a legitimate dealer will give you a straight answer.
Pawn shop: 50–75% of melt for walk-ins. Better if you're a regular. Pawn shops have overhead and need margin, so their offers reflect that.
Cash-for-gold stores: Often the lowest payout. Many pay 40–60% of melt. Know your numbers before walking in so you can recognize a bad offer immediately.
Private sale: Can get you 85–95% of melt if you find the right buyer, but takes time and effort.
The takeaway: regardless of where you sell, you need to know the melt value first. Otherwise you have no way to judge whether an offer is fair. The price of 10K gold per gram is your baseline — everything else is negotiation.
Don't Confuse 10K Gold with Gold-Filled or Gold-Plated
Three things that are absolutely not the same as 10K solid gold:
Gold-filled (GF): A layer of gold bonded to a base metal. "10K GF" means the piece has a thin 10K gold layer — typically 5% of the total weight. A 50-gram gold-filled bracelet might contain 2.5 grams of actual gold. The melt value is a fraction of solid 10K.
Gold-plated (GP/EP): An even thinner layer of gold over base metal. The gold content is negligible — fractions of a gram. Essentially zero melt value.
Rolled gold plate (RGP): Similar to gold-filled but with an even thinner gold layer. Not worth calculating for melt.
If a piece is stamped "GF," "GP," "RGP," "EP," or "HGE" (heavy gold electroplate), it is not solid 10K gold and should not be valued as such.
The Bottom Line
The value of 10K gold is 41.67% of the pure gold spot price per unit of weight. At current prices, that works out to roughly $64 per gram — a number that's climbed steadily over the past few years.
10K gold is real gold, with real value, and it's consistently underestimated by both sellers and inexperienced buyers. If you're buying scrap, that underestimation is where your margins come from. If you're selling, knowing the actual per-gram value protects you from accepting less than your pieces are worth.
Run the numbers before every deal. A calculator that pulls live spot prices — like the free one at nustack.app — takes the guesswork out. Plug in the weight, select 10K, and you'll know the melt value before you make or accept an offer.