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I have three pieces of green tourmaline and here they are in increasing order of zoom.





"Tourmaline" is actually a pretty vague classification that covers a lot of different species of rock, but as a label it's fit for purpose here.









And the best closeup possible with the normal camera:



But what of the microscope? It's over there, the tourmaline is over there, and I'm under a cat.

*musak break*

OK, here's something. Not very fabulous at all really. This is a case where I need a better lens on the camera rather than a microscope. Still, had to try.

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stephbg

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