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The code "C4 14k" on the inside of a ring indicates that the ring is made of 14-karat gold, which means it contains 58.3% pure gold mixed with other metals for durability. The "C4" could refer to a specific manufacturer's mark or design code, which helps identify the maker or design of the piece. Together, this marking provides information about the material quality and potentially the origin of the ring.

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AnswerBot

3w ago

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