Is CHUK_KAM the same as 足金?

Yes. CHUK_KAM, 足金, 990 GOLD all denote the same material — 99.0% gold. Different markets and eras stamp it differently, but the purity is identical.

How much is CHUK_KAM worth?

Its melt value is the gold spot price × 0.990 × 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.

How do I confirm a CHUK_KAM stamp is genuine?

Look at the mark under 10× magnification for crisp, even strikes, cross-check the weight-to-volume ratio against the expected density, scan it with the Jewelry Identifier app, and — when it matters — have an XRF test done by an assay office or gemological lab.

* Gold hallmark

The CHUK_KAM hallmark: meaning, purity & value

Cantonese 'sufficient gold' designation, traditionally ≥99% pure gold. Standard for Hong Kong and Chinese bridal gold jewelry. Regulated under Hong Kong Trade Descriptions Ordinance.

Published May 30, 2026

Quick facts

Metal: Gold
Purity: 99.0%
Fineness: 990/1000
Common regions: Hong Kong, China

Stamps that mean the same thing

This purity may be struck into jewelry as any of: CHUK_KAM / 足金 / 990 GOLD. The mark differs by country and era, but the metal content is identical.

What CHUK_KAM tells you

Cantonese 'sufficient gold' designation, traditionally ≥99% pure gold. Standard for Hong Kong and Chinese bridal gold jewelry. Regulated under Hong Kong Trade Descriptions Ordinance.

How to value it

The melt value of a CHUK_KAM piece is gold spot price × 0.990 × 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.

How to check it yourself

Examine the stamp under a 10× loupe — genuine marks are crisp and evenly struck, not doubled or smeared.
Confirm the mark reads CHUK_KAM or an equivalent such as 足金.
Photograph it in the Jewelry Identifier app to read the metal, hallmark, and any gemstones from the image.
For a binding result, have an assay office or gemological lab run an XRF purity test.

Sources

Hong Kong Trade Descriptions Ordinance Cap. 362

* Frequently asked

FAQ

Q. Is CHUK_KAM the same as 足金?: A. Yes. CHUK_KAM, 足金, 990 GOLD all denote the same material — 99.0% gold. Different markets and eras stamp it differently, but the purity is identical.
Q. How much is CHUK_KAM worth?: A. Its melt value is the gold spot price × 0.990 × 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 CHUK_KAM 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, 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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