I Have a tie clasp I've dug up & it's marked 14k. It acid test 14k & not to 18k. My issue is the spring is the only thing magnetic on this piece. I've been told that making springs from gold is not a good idea because gold won't retain it's bent properties enough for a spring. Thus the reason necklace clasp are gold but the spring inside is not & that's why the clasp are magnetic. Is this true?
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