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When you have a piece of 10k jewelry that has 'OTC' on it, it is the name of the company. OTC has been a leader in the fine jewelry industry for many years.

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11y ago

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What does otc mean on jewelry?

When you have a piece of 10k jewelry that has 'OTC' on it, it is the name of the company. OTC has been a leader in the fine jewelry industry for many years.


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