arockmaniac:Banded Fluorite from Durango, Mexico: backlit, under long wave ultraviolet light (black light) and white light.
tags:
from: https://eikuuhyo.tumblr.com/post/170997477916
recommended: eikuuhyo tumblr, analinsertions #dfabbian analsquirt dgdannskywalker anastasia_shcheglova