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Cobalt Jewelry Education: About, Care, and Buying Tips ...

    https://www.bluenile.com/education/metal/cobalt
    Cobalt Made from a highly durable alloy, cobalt is four times harder than platinum while at the same time, less dense. Because of its natural hardness, cobalt jewelry is extremely scratch, chip and corrosion …

Should I Buy a Cobalt Ring? A Complete Guide Jewelry Guide

    https://www.jewelryshoppingguide.com/cobalt-men-wedding-ring-guide/
    Cobalt and Its Alloys Cobalt is a transition metal, similar to metals such as tungsten, platinum or silver. Cobalt, in its pure form, cannot be used in jewelry. As a result, cobalt is alloyed with other metals to …

Platinum Jewelry FTC Consumer Information

    https://www.consumer.ftc.gov/articles/0294-platinum-jewelry
    Platinum jewelry with 15% to 50% base metals also may be labeled "platinum.” These platinum/base metal alloys contain from 50 to 85% pure platinum, but the total of pure platinum and other platinum …

Why Use Platinum-Cobalt Alloy? Stuller

    https://www.stuller.com/articles/view/why-use-platinum-cobalt-alloy/
    And, when you factor in the benefits that this Platinum-Cobalt alloy offers, you come out ahead in learning this new set of skills. For example, this Pt-Co alloy was developed more than 20 years ago …

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