You set your gold on the counter, the buyer places it on a scale, and a number comes up — but in what unit? Grams? Pennyweight? Troy ounces? If you've ever felt a flicker of uncertainty at that moment, you're not alone. Weight is the foundation of what your gold is worth, and the units used to measure it are genuinely confusing because the jewelry trade uses measurements most people never encounter anywhere else. Understanding them takes about five minutes and puts you on equal footing at the counter.
Why weight is the starting point for value
The value of solid karat gold comes down to a simple chain: weight, multiplied by purity (karat), measured against the current gold price. Get the weight wrong or misunderstand the unit, and every number after it is off. That's why the unit on the scale matters — it's the first link in the calculation. We walk through the full formula in how much is my gold worth.
The three units you'll actually see
Grams (g)
The gram is the metric unit most people recognize, and it's what many buyers default to because it's precise and universally understood. If the scale reads in grams, you're looking at the most granular common measurement — small pieces of jewelry are often just a few grams.
Pennyweight (dwt)
This is the one that throws people. A pennyweight — abbreviated dwt — is a traditional jewelry-trade unit. One pennyweight equals exactly 1/20 of a troy ounce, or about 1.555 grams. So a pennyweight is heavier than a gram. If a scale reads in pennyweight, the number will be smaller than the same item measured in grams, because each unit is bigger.
The "dwt" abbreviation is what causes confusion — the "d" comes from an old term (denarius). There's nothing shady about a scale reading in pennyweight; it's a legitimate, standard trade unit. But you should know which unit you're looking at so you can compare offers fairly.
Troy ounces (ozt)
Precious metals are traded in troy ounces, not the standard (avoirdupois) ounces you'd use for food. A troy ounce is about 31.1 grams and equals 20 pennyweight. This is the unit the gold spot price is quoted in — when you see "gold is $X per ounce," that's a troy ounce.
The conversions worth memorizing
- 1 troy ounce = 20 pennyweight (dwt) = about 31.1 grams
- 1 pennyweight (dwt) = about 1.555 grams
- 1 gram = about 0.643 pennyweight
The practical takeaway: the same piece of gold produces a bigger number in grams than in pennyweight. Neither is "more" gold — it's the same metal, just measured with a different ruler. What matters is that whoever is buying uses the correct price for the unit they're weighing in. A price per gram applied to a pennyweight figure (or vice versa) would be wrong, which is exactly why knowing the unit protects you.
How to protect yourself at the counter
- Ask what unit the scale is set to. A one-second question. Grams, pennyweight, or troy ounces — just know which.
- Watch the weighing. A legitimate buyer weighs your gold in front of you on a visible scale, not in a back room. If you can't see it, ask.
- Understand karat separation. Gold of different karats has different value per unit weight, so 10K, 14K, and 18K pieces should be weighed separately, not lumped together. Mixing them into one pile means the lower karat drags down the average. This matters a lot with mixed lots — see what broken or scrap gold is worth.
- Weigh at home first if you can. An inexpensive kitchen or jewelry scale in grams gives you a ballpark before you go, so you walk in with a rough expectation.
- Don't forget the stones. On pieces with gemstones, the stone weight isn't gold. A careful buyer accounts for this rather than paying gold price for a sapphire.
Does the unit change what you're paid?
It shouldn't — and that's the whole point. A correct offer is the same real value whether it's expressed in grams, pennyweight, or troy ounces, because they're just different ways of describing the same amount of metal. The unit only becomes a problem if a price meant for one unit is applied to a number measured in another. Being able to spot that is the entire reason to learn this. If you want to compare offers around the county with confidence, our guide to selling gold in Broward County covers what else drives the final number.
Frequently asked questions
Is pennyweight more than a gram?
Yes. One pennyweight is about 1.555 grams, so it's heavier. That means the same piece of gold shows a smaller number on a pennyweight scale than on a gram scale — it's the same metal measured with a larger unit, not less gold.
Why don't gold buyers just use regular ounces?
Precious metals use the troy ounce, which is a different, slightly heavier unit than the standard ounce used for food and shipping. The gold spot price is quoted per troy ounce, so the trade measures in troy weight to stay consistent with the market price.
Should different karats be weighed together?
No. Because 10K, 14K, and 18K each have different value per unit weight, they should be sorted and weighed separately. Weighing them together averages them down and shortchanges your higher-karat pieces.
Visit DD Pawn Loans in Pompano Beach
DD Pawn Loans is at 2751 W Atlantic Blvd, Pompano Beach, FL 33069. Call or text (561) 774-9292. Hours: Mon–Thu 10am–6:30pm, Fri 9am–8pm, Sat 10am–6:30pm, closed Sunday. All sales are final — no returns.