Glass Rock

12 years ago

Glass Rock
Glass Rock

how can I tell the difference between rock crystal and glass?

Rock crystal, more commonly called quartz has a hardness of 7 on the Mohs hardness scale, glass has a hardness of 6-6.5. To test this try to scratch the quartz with glass, it won’t scratch then scratch the glass with the quartz, the quartz will leave a scratch in the glass.
Hope this helps

Glass Rock – Ghost of a Dream

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