What does 750 mean on jewelry?

What the mark tells you

The European fine-jewelry standard and the mark of most luxury houses — Cartier, Tiffany, Van Cleef. Richer yellow than 14K.

You may also see it written as 18k, 18kt, .750. They all mean the same thing.

What 750 is worth by weight, today

A piece stamped 750 is 75.0% gold, so at today's spot price the metal in it is worth $93.47 per gram. A buyer will offer 70–90% of that — they carry the refining cost and take a margin — and anything below about 60% is a poor offer.

Weigh the piece without stones if you can. A typical ring is 3–6 g, a 45 cm chain 8–15 g, a bangle 15–30 g. Stones, solder and springs add weight that is not gold.

Is it worth anything?

Solid gold, high value. Three quarters of the metal weight is pure gold.

Marks often confused with 750

Where to find it

On a ring the mark is almost always inside the band. On a chain or bracelet look at the clasp or the tag beside it; on earrings check the post or the back. Marks are tiny and often worn — a phone camera zoomed all the way in usually reads one better than your eye does.

A stamp is evidence, not proof

Marks wear down, are struck only partially, and are occasionally forged outright. If a piece is valuable enough to matter, have the metal tested rather than relying on the stamp alone. Equally, an absent stamp does not always mean an absent metal: older and handmade jewelry is frequently unmarked.