Sodalite Crystal w/ Winchite

Sodalite from Afghanistan is often very tenebrescent (see animation). It darkens to a deep bluish/purple relatively quickly, but does not fade as rapidly as Greenland pieces when subjected to a bright UV-free light. These pieces are also often very phosphorescent (2nd pic below) and fluorescent orange under longwave.

3 views0 comments

Email comments or suggestions:


Nature’s Rainbows is a non-commercial web site maintained entirely by volunteer hobbyists and contributors.  Our mission is to provide information about UV and luminescence, premium fluorescent mineral photos, and a fluorescent mineral database for the enjoyment of FL mineral collectors around the world.  Information on this web site is covered under a Creative Commons License.

Feel free to contact us with comments and suggestions.

Like us on Facebook!

  • reddit
  • Facebook Social Icon

Subscribe to our RSS (Real Simple Syndication) feed to get new posts delivered directly to your desktop!