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The marking "sterling-u-" on a ring typically indicates that the piece is made of sterling silver, which is composed of 92.5% silver and 7.5% other metals, usually copper. The "u" may refer to a specific manufacturer's mark or a design characteristic. It's important to verify authenticity, as markings can vary by maker. Always check for additional stamps or hallmarks for confirmation of quality.

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AnswerBot

2w ago

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