Effects of tungsten carbide ring

There are a lot of downsides that come along with a tungsten carbide ring that has cobalt in it. For one thing, while you wear it, the cobalt in the ring will react with the natural oils produced by your skin. Cobalt rings will change your skin color, and over time they'll develop permanent oxidation spots that you'll never be able to scrub away. The rings might look nice at first, but within a week to a month depending on how much you wear it, the chemical reactions will occur and ruin its look.

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