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Mohs Scale of Gemstone Hardness

The Mohs Scale is commonly used to rate gemstone hardness.

It’s very useful to know the hardness of the particular gemstone you’re working with so that you can design a mounting or piece of jewelry appropriate for it, resulting in a quality, durable piece of jewelry.  Softer stones, for instance, are not usually so great for rings, but make great shorter-length necklaces.  Don’t let your customers find this out for you!  Another example is that you can apply a pumice wheel, which is a 5.5 on the Mohs scale, to your bezel or prongs during the finishing process without worry about damage to your stone as long as it’s a 6 or greater on the Mohs scale.



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