sixpenceee: Bismuth Crystals are beautiful. They have an interesting geometric form and are rainbow-colored from the oxide layer that quickly forms on them. Here’s a website that has instructions on how to make them.
tags: DOCTOR WHO AFICIONADO,
from: https://tanktheory21.tumblr.com/post/107609448548
more here tumblr.freepornpreview.net/tanktheory21