Unverified50% confidenceDecision RuleTime unknown
长期佩戴（如耳钉常戴不摘）优先选S925纯银或14K金以上，18K金硬度更高不易变形；黄铜/合金电镀首饰镀层通常3-6个月磨损露底，只适合短期或低频佩戴
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Long-term
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