Cristais de bismuto se parecem com esculturas psicodélicas - Mega Curioso
Bismuth was long thought to be heaviest stable element; as it turns out, Synthetically grown bismuth crystals. Bi is ever so slightly radioactive, but its half-life is a billion times the age of the universe.
Caminho das Pérolas
Sugilite Oval. Sugilite is one of the most recently discovered gemstones. This is from South Africa from a deposit originally discovered in 1979.