千足金饰品是指含金量不小于99.9%的饰品。在首饰上的印记为"千足金"，999金"。千足金是首饰成色中最高的。

1000 gold jewelry refers to jewelry with a gold content of not less than 99.9%. The marks on the jewelry are "1000 gold" and "999 gold". Pure gold is the highest quality jewelry.

足金饰品是指含金量不小于 99% 的饰品，在首饰上的印记为"足金"、"990金"。

Pure gold jewelry refers to jewelry with a gold content of not less than 99%. The marks on the jewelry are "pure gold" and "990 gold ".

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