Unverified85% confidenceTradeoffTime unknown
材质越软越难做精细工艺：足金硬度低（约2.5莫氏）不适合镶嵌爪镶和复杂雕花，易变形；18K金（含25%其他金属）硬度更高，适合微镶、复杂图案定制
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85%
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