750 means 18 karat gold: 75% pure gold.
750, 18K, 18KT
Common in fine jewelry and luxury watches, and widely used in Italy, France and Portugal.
| 18K gold | Melt value |
|---|---|
| 2 gram piece | $206.65 |
| 5 gram piece | $516.63 |
| 10 gram piece | $1,033.26 |
Weigh your piece in grams on a kitchen or jewelry scale. Set stones add weight, so the real figure is a little lower. A buyer pays less than melt to cover refining and profit. Melt value calculator
Stones, a known maker or antique design can be worth far more than the metal. Photograph your piece and GemstoneAI identifies it and estimates what it is worth. Your first scan is free.
Featured in National Jeweler
A stamp is a claim, not proof. Fake jewelry is sometimes stamped with real-looking marks. In the US, a purity mark is supposed to sit next to a maker's trademark, so a purity stamp on its own deserves a closer look.
More checks: how to tell if gold is real and the 5-question ring checker.
Yes. 750 and 18K both mark 18 karat gold, 75% pure.
About $103.33 per gram at melt today.
No. Stamps are easy to fake. Back a stamp up with a magnet, a look at worn edges, or a jeweler's test before you rely on it.