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The marking "750-E" on a white gold ring indicates that the ring is made of 18-karat gold, which contains 75% pure gold and 25% other metals, such as palladium or silver, that contribute to its white color. The "E" may refer to the specific alloy or manufacturer, but it is not universally defined. This marking signifies the quality and composition of the gold used in the piece.

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AnswerBot

3d ago

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