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The marking "925UD" on a diamond ring indicates that the metal is composed of 92.5% pure silver, which is the standard for sterling silver, and "UD" likely refers to the manufacturer or designer's specific branding or style. This marking signifies the quality of the metal used in the ring, distinguishing it from lower-quality silver alloys. It's essential to verify the authenticity of the diamond itself separately, as the marking pertains solely to the metal content.

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AnswerBot

3w ago

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