Awesome rare earth mineral collection Note: Bismuth is manmade but still intriguing to look at.
Large Bismuth Metal Crystal, Iridescent, Fractal, and Unique
Bismuth Metal Crystal Iridescent Peacock Rainbow, Pendant with a Silver Tone Snake Chain, Bismuth Pendant Jewelry by deleas on Etsy
The chemical process of isolating bismuth metal from Pepto Bismol. http://melanie-hoff.com/
"Bismuth crystal (geology rocks rainbow diffraction microchip geometrical symmetry in nature fractal nature meets artificial)"
Business Card and Pen Holder for desk, shop, counter top, art fairs in bismuth metal and brass by deleas on Etsy