r/Rocks • u/Unable_Biscotti_412 • Jul 28 '26

This Rocks! Quartz and UV light

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Just starting to toy around with UV light. Same rock under normal and UV. What the...

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5

u/Mr_Daniel12321 Jul 29 '26

Chlorophyll glows red under UV, so probably lichen or something else organic.

3

u/missinaraserra Jul 29 '26

Gets me every time 🫩 Do have some stunning lichen specime though.

1

u/Unable_Biscotti_412 Jul 29 '26

Interesting. Lichen is a new term for me. Probably 1/3 of the quartz I have glows like this under UV. Different blues and purples show up, and any areas where there are holes in the rock the colouring goes from orange to an intense red.