I don't think there are different grades, but from some Googleing it seems there are different alloys of the metal. I've never been able to find or get my hands on any platinum, so I have no Idea.
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I don't think there are different grades, but from some Googleing it seems there are different alloys of the metal. I've never been able to find or get my hands on any platinum, so I have no Idea.
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