fuckyeahmineralogy: Amethyst, which is actually Quartz that is irradiated by Iron (Fe3+) for silicon, acting as a trade element in the crystal structure of the specimen.
tags: So many OTPs, queue,
from: https://eikuuhyo.tumblr.com/post/117993273897
more here tumblr.freepornpreview.net/eikuuhyo