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Author Topic: Stones that bleach in the sun  (Read 306 times)

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R.U. Sirius

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Stones that bleach in the sun
« on: May 02, 2023, 09:29:06 PM »
I'd like to put together a list here of stones that permanently change color when exposed to strong light. Please comment with any additions or corrections, and I will update the list.

  • Rose quartz - fades in sunlight
  • Amethyst - fades in sunlight
  • Vivianite - darkens and deteriorates
  • some fluorites (which ones?) fade in sunlight
  • some fluoroapatites (which ones?) fade in sunlight
  • lepidolite turns brown
  • thulite goes from pink to orange
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lithicbeads

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Re: Stones that bleach in the sun
« Reply #1 on: May 03, 2023, 11:17:19 AM »
Add lepidolite which turns brown and thulite which goes from pink to orange.
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R.U. Sirius

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Re: Stones that bleach in the sun
« Reply #2 on: May 03, 2023, 04:19:23 PM »
After some digging around, I found this discussion on Mindat where someone already compiled the list (scroll down the linked page to see it).
 Curiously, lepidolite and thulite are not there!
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lithicbeads

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Re: Stones that bleach in the sun
« Reply #3 on: May 04, 2023, 03:46:59 PM »
Those two I have experience with.
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