Karat describes how many of 24 parts are gold; parts-per-thousand marks express a similar proportion on a 1,000-part scale.
Marking rules and common standards vary by market, so identify the full mark and origin where possible.
Common interpretation
41.7% gold; commonly described as 10 karat
Material category
Gold alloy
What the mark can suggest
417 is commonly used as a parts-per-thousand gold fineness claim corresponding to 10-karat gold: 10 of 24 karat parts is approximately 41.7%.
What it does not prove
- That the item has been independently assayed
- Gemstone identity or quality
- Age, maker, or value
What to check next
- 1Look for a maker or company mark near the quality mark
- 2Check for plating or filled terms
- 3Test the metal if the result affects a sale, appraisal, or repair
Frequently asked questions
Is 417 the same as 10K gold?
It is commonly used for the 41.7% gold proportion associated with 10-karat gold, but the item still needs to be evaluated in context.
Does 417 mean solid gold?
Not by itself. Look for nearby plating or filled disclosures and verify the construction and metal when it matters.
Sources and further reading
This guide summarizes the official and institutional references below. Open the original source for its full scope, jurisdiction, definitions, and updates.
U.S. Federal Trade Commission
Buying Platinum, Gold, and Silver JewelryConsumer guidance on karat marks, silver fineness, plating, filled products, and maker marks.
https://consumer.ftc.gov/articles/buying-platinum-gold-and-silver-jewelry
U.S. Federal Trade Commission
Jewelry GuidesOfficial guidance on truthful descriptions of jewelry materials, qualities, treatments, and origins.
https://www.ftc.gov/news-events/topics/tools-consumers/jewelry-guides
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