bling aijewelry stamps · gold
solid metal417 stamp on gold: what it means.
417 means 10k gold: 41.7% pure gold. it's the lowest karat traditionally sold as gold in the united states.
- metal
- 10K gold
- 41.7% gold
- also stamped as
- 417 · 10K · 10KT · 10 karat
- solid or plated
- solid all the way through
what it's worth today
live spot price · updated Sep 24, 2026, 12:47 AM UTC
melt value of the metal only, from the live spot price. buyers pay less than melt; stones, craftsmanship and maker add value.
the mark
what 417 means.
417 is 417 parts gold in every 1,000, which is 10 karats out of 24. american pieces are almost always stamped 10K; the 417 form turns up more on imported and european-made pieces.
with more alloy than gold, 10k is the hardest and least expensive solid gold. it's common in class rings, men's rings and chains that take hard wear.
for decades US guidelines set 10k as the minimum for anything called gold. the FTC's 2018 revision allows lower karats if the karat is stated, but 10k is still where most american solid gold starts.
before you trust it
how to check a 417 stamp.
- read the whole stamp. letters after the number change everything: 14K GF, 14K GP, 18K HGE and 1/20 12K RGP all describe plated or filled pieces, not solid gold.
- hold a strong magnet to it. gold isn't magnetic, so a piece that pulls toward the magnet isn't solid gold. a steel spring inside a clasp can still be magnetic on a genuine piece, so test the body, not the clasp.
- check the edges, the inside of the band and the back of the clasp, where pieces wear first. if a different color shows through, silver, copper or gray, it's plated, whatever the stamp says.
- look for a maker's mark next to the stamp. in the united states, anyone who stamps a gold or silver quality mark on a piece made since 1962 must stamp a registered trademark beside it, so a lone number with no maker's mark proves very little.
- for certainty, ask a jeweler or gold buyer for an XRF scan. it reads the metal's composition in seconds without scratching the piece, unlike an acid test.
questions
the 417 stamp, answered.
other stamps
every mark is searchable in the hallmark decoder. selling vintage or estate pieces? see photography for vintage and estate sellers.
selling what you found?
photograph it like it's worth something.
bling ai turns a phone photo of a piece into a listing shot that looks like a campaign, so good jewelry sells for what it is.
