Two gold chains can look almost identical and bring very different offers. The reason is stamped right on them: 10K, 14K, 18K, or 24K. That little mark is the karat, and it tells a buyer how much actual gold is in the piece. If you’re weighing 10K vs 14K vs 18K gold value before you sell, here’s what each one means for the cash in your hand.
Karat and purity, quickly
Pure gold is soft, too soft for daily wear, so it gets mixed with tougher metals like copper and silver. Karat measures how much of that mix is real gold, on a scale to 24. The higher the karat, the more gold per gram, and the more a buyer can pay for the same weight.
The four karats you’ll actually run into
| Karat | Gold content | Usually found in | Feel and wear |
|---|---|---|---|
| 24K / 999 | 99.9% | Coins and bullion | Softest, scratches and bends easily |
| 18K / 750 | 75% | Fine jewelry | Rich color, a bit soft |
| 14K / 585 | 58.5% | Everyday jewelry | Balanced and durable |
| 10K / 417 | 41.7% | Budget and hard-wearing pieces | Hardest, least gold |
Put simply, an 18K piece holds roughly a third more gold than the same weight in 14K, and nearly double what 10K holds. That gap shows up directly in the offer.
So what pays more when you sell?
Per gram, higher karat wins every time, because there’s more gold in it. An 18K ring will out-earn a 14K ring of the same weight, and both will beat 10K.
But karat is only half the story. Weight and the day’s gold price finish it. A heavy 10K bracelet can easily be worth more than a dainty 18K band, because there’s more total gold on the scale. This is the mistake we see most often: people assume a higher stamp always means a bigger check, and forget that a light piece is a light piece no matter how pure it is.
If you want the full walk-through of how an offer comes together, our guide on how much your gold is worth breaks down the weight-times-purity-times-price math.
The 10K question
People ask whether 10K is even worth selling. It is. The downside of 10K is right there in the number: at 41.7% gold, it holds the least of the four, so per gram it pays the least. The upside is that it’s the most durable, which is why so many class rings and everyday chains are 10K in the first place. A buyer still values it by weight and purity, the same as anything else. Don’t set it aside thinking it’s worthless.
24K, coins, and bullion
You’ll rarely see 24K in jewelry, because it’s too soft to hold a shape. Where it does show up is in coins and bars, where purity is the whole point. If that’s what you have, the value works a little differently, and some coins sell for more than their gold alone. Our page for gold coin buyers covers that side.
Bottom line for selling gold in Boston
Don’t sort your gold by which stamp looks most impressive. Higher karat pays more per gram, but a heavier lower-karat piece can win on total weight, and the market sets the rate that day. The simplest move is to bring everything, let it get weighed and tested together, and see the numbers side by side.
When you’re ready, start on our cash for gold page, or read how selling gold works step by step before you come in.
Common questions
How much will a jeweler pay for 10K gold?
A 10K payout starts from the metal math: grams times 41.7% times the day’s gold price gives the melt value, and the offer is a share of that value. The rest covers refining and resale, which every buyer has to account for. Because 10K is the least pure of the four karats, it pays the least per gram, but it is still valued by weight and purity like anything else, so it is worth bringing in for a same-day quote.
Is 18K gold worth more than 10K?
Per gram, yes. 18K is 75% gold and 10K is 41.7%, so the same weight of 18K holds much more gold and pays more. Total value still depends on how much each piece weighs.
Which karat is best to sell?
There’s no single best karat. Higher karat pays more per gram, but you sell whatever you have, and it’s all valued by weight and purity. A heavy 10K lot can be worth more than a single small 18K ring.
Does white gold pay less than yellow gold?
No. White gold is the same gold content for its karat; the color comes from the alloy mix and often a rhodium finish. A 14K white piece and a 14K yellow piece of equal weight carry the same gold value.