Jewelry stamp decoder

Type the number or letters stamped on your clasp, ring band or earring post to see what metal it is and how pure.

Try 585, 750, 10K, 925, or GF.

These marks mean it's not solid gold

Plated and filled items have only a thin gold layer and are worth little or nothing as scrap.

GFGold-filled
GPGold-plated
HGEHeavy gold electroplate
RGPRolled gold plate
VermeilGold-plated sterling silver
1/20 14K GFGold-filled; 1/20 of the weight is 14K gold

Every stamp, by metal

StampMeansPurityValue per gram
999 / 24K / 24KT24 karat gold99.9%—
958 / 23K23 karat gold95.8%—
916 / 917 / 22K22 karat gold91.6%—
875 / 21K21 karat gold87.5%—
750 / 18K / 18KT18 karat gold75%—
585 / 583 / 14K14 karat gold58.5%—
417 / 416 / 10K10 karat gold41.7%—
375 / 9K / 9KT9 karat gold37.5%—
333 / 8K8 karat gold33.3%—
No stamp at all?How to test gold at home with an acid kit.Stamp says one thing, buyer says another?Why stamps can be wrong or worn.Ready to weigh it?How to weigh gold at home.