Bismuth
Also known as: Native bismuth, Bismuth crystal, Rainbow bismuth, Hopper bismuth
📜 Key facts
| Age | Native bismuth occurs in ore veins of many ages. Rainbow 'hopper' crystals are modern and lab-grown. |
|---|---|
| Origin & sources | Native bismuth: Schneeberg (Saxony, Germany), Bolivia (Tasna), Australia and Canada. Most rainbow bismuth crystals sold are LAB-GROWN from melted commercial bismuth metal. |
| Composition | Bismuth (Bi). It is a brittle, heavy, pinkish-silver native element. The rainbow colours are a thin surface layer of bismuth oxide |
How it forms
Native bismuth forms in hydrothermal veins, usually as grains and masses, and rarely as natural crystals. The stair-stepped 'hopper' crystals are grown by melting bismuth metal and letting it cool. The edges grow faster than the faces, and a thin oxide film gives the iridescent colours. They are man-made, not natural specimens.
🌍 Where it's found
- Type locality
- Notable source / deposit
- Country of origin
Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.
🔗 See also
- Bismuthinite: bismuth sulfide, the main natural bismuth ore mineral
💡 Good to know
Lab-grown, not natural: almost all the iridescent stair-step bismuth crystals sold are grown from melted bismuth metal. Natural native bismuth looks quite different. It forms silvery-pink, often tarnished grains and masses in ore veins.



