Tag Archives: star sapphire

A Note on Inclusions

Quartz with petroleum inclusions.

 Since I mentioned inclusions a few times last weekend and showed off a lot of rutilated quartz I thought I’d explain it a little bit here.


In mineralogy* inclusions are materials trapped in minerals, normally during its formation. They’re often other minerals, but sometimes they are liquids or gases. Technically the insects and plants found in amber are inclusions too.

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