What Does 750 Mean on Jewelry?

A 750 stamp tells you the piece is 18-karat gold. On the millesimal scale, 750 means 750 parts pure gold per 1,000 — that's 75% gold, the purity most fine and designer jewelry uses because it balances rich color with enough durability to wear.

What is a 750 piece worth?

18K is 75% gold, so a 750 piece carries significantly more melt value than 14K or 10K of the same weight — roughly $72 of gold per gram at a ~$3,000/oz price.

How to verify a 750 stamp

Because 18K is a premium purity often faked, scan the 750 stamp with the Hallmark Reader and verify the metal with the Is It Real? tool before buying or selling. Anyone can stamp a mark on metal, so a hallmark alone isn't proof — the fastest way to check is to photograph the stamp and run it through the free Hallmark Reader, then confirm the metal itself with the Is It Real? tool. For a full picture of what your piece is worth, get a free jewelry appraisal. To compare 750 with every other mark side by side, see the full jewelry stamps and markings chart.

Frequently asked questions