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How to Tell Similar Rocks and Minerals Apart

Starting at 1:50 in this video, Susan addresses a common conundrum: how to tell similar-looking rocks apart. Often minerals resemble other minerals in color and/or pattern, and it can be difficult to tell which is which. This can be important especially because sometimes cheaper minerals are passed off as rarer more expensive minerals, and sometimes not even on purpose because it can really be hard to tell. Lapis vs. sodalite? Jade vs. aventurine vs. serpentine? Opal vs. opalite vs. moonstone? Ulexite vs. selenite? Susan shows examples of each and explains how to tell them apart.

 

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