Bismuth is one of the pure chemical elements (Bi, 83) and a metal with many unique properties. It is almost as dense as lead, but without the toxicity. It is also one of the least thermally conductive metals, but has a relatively low melting point (271°C, 520°F). In fact, when melted, bismuth can crystallize upon cooling into the stair-stepped pattern. The iridescent colors are caused by the oxidation of the outer layer as it cools.
Bismuth was recently discovered to be very weakly (harmlessly) radioactive. But since its half-life is longer than the age of the universe, it can be considered stable. Bismuth is a key ingredient of Pepto-Bismol. You can even extract it from the pink medicine with a little chemistry.
Authenticity Guaranteed
Everything we sell is verified authentic. We only deal with the most reputable collectors, and consult with our trusted network of scientists and experts.
Free Shipping
All orders of $50 or more qualify for free shipping in the US.
Easy Payments
We accept most cards, PayPal, After Pay, Apple/Google/Meta Pay, and crypto.
Simple Returns
Change your mind? No problem. Enjoy easy returns within 30 days.
Free Stickers
We toss a random science sticker in every online order
