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This is just a quick (as in not in depth) discussion of the MOHS scale of hardness. The MOHS scale was developed by and named after Freiderich Mohs in 1812. It is one way for a geologist (or a rockhound) to determine what type of stone they might have. The MOHS scale of hardness is …
Genn John has been acting as the legs for the Crystal People since 1995. Having accepted the honor to be their voice as well, she is an author and frequent blogger about all things quartz crystal.
Question? Contact Genn
genn@arkansascrystalworks.com
