# Bi-crystal

- By: Alchemist-hp (www.pse-mendelejew.de) + Richard Bartz with focus stack.
- Date: 5 June 2009 (according to Exif data)
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Bi-crystal.jpg)
- Rights: [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0)
- Picture: https://invisiblenetwork.ai/thumbs/commons/thumb/7/75/Bi-crystal.jpg/1920px-Bi-crystal.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

The chemical element bismuth as a synthetic made crystal. The surface is an iridescent very thin layer of oxidation.