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* Gold hallmark

The 14KW hallmark: meaning, purity & value

14KW is 14K white gold. Same melt math as 14K yellow; color comes from alloy + rhodium plate.

Published May 30, 2026

Quick facts

Metal
Gold
Purity
58.5%
Fineness
585/1000
Karat
14K
Common regions
United States
Density
12.9 g/cm³
Standard
ISO 9202

Stamps that mean the same thing

This purity may be struck into jewelry as any of: 14KW / 14K White / K14WG. The mark differs by country and era, but the metal content is identical.

What 14KW tells you

14KW is 14K white gold. Same melt math as 14K yellow; color comes from alloy + rhodium plate.

How to value it

The melt value of a 14KW piece is gold spot price × 0.585 × weight (g). A buyer typically deducts 5–15% for assay, refining, and margin, so the cash offer lands just under that figure. Stones and complex settings are usually excluded from the metal weight.

Live calculators: gold karat × weight · item × karat estimates · per-gram hub.

How to check it yourself

  1. Examine the stamp under a 10× loupe — genuine marks are crisp and evenly struck, not doubled or smeared.
  2. Confirm the mark reads 14KW or an equivalent such as 14K White.
  3. Weigh the piece and estimate its volume — the density should land near 12.9 g/cm³ for this alloy.
  4. Photograph it in the Jewelry Identifier app to read the metal, hallmark, and any gemstones from the image.
  5. For a binding result, have an assay office or gemological lab run an XRF purity test.

Sources

  • ISO 9202
  • Trade hallmark references

* Frequently asked

FAQ

Q. Is 14KW the same as 14K White?
A. Yes. 14KW, 14K White, K14WG all denote the same material — 58.5% gold. Different markets and eras stamp it differently, but the purity is identical.
Q. How much is 14KW worth?
A. Its melt value is the gold spot price × 0.585 × the weight in grams. Buyers then deduct roughly 5–15% for refining and margin, so a quoted buy-back price sits a little below that theoretical figure.
Q. How do I confirm a 14KW stamp is genuine?
A. Look at the mark under 10× magnification for crisp, even strikes, cross-check the weight-to-volume ratio against the expected density (12.9 g/cm³ for this alloy), scan it with the Jewelry Identifier app, and — when it matters — have an XRF test done by an assay office or gemological lab.

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