Katie 🍍
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divergent-boundary.bsky.social
Katie 🍍
@divergent-boundary.bsky.social
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270 of #365Minerals 🧪⚒️

Amethyst
- Purple variety of quartz
- Is purple due to Fe replacing Si and exposure to radiation
- Exposure to UV light makes it colourless
- Heating turns it orange-brown
- Its name is from the Greek amethystos (not drunk) because it was thought to cure drunkenness #minerals
A cluster of dark purple tapering amethyst prisms. From Romania. Specimen on display in the Natural History Museum, London. Several pale purple amethyst crystals on white milky quartz crystals. From Diamond Hill, Rhode Island, USA. Specimen on display in the Natural History Museum, London. A cut and polished slice of amethyst showing colour zoning which resembles a dark purple and pale purple radioactive symbol due to twinning. From Minas Gerais, Brazil. Specimen on display in the Natural History Museum, London. A cluster of dark purple amethyst crystals which become colourless towards the base. From Wheal Uny, Cornwall, England, UK. Specimen on display in the Natural History Museum, London.
September 27, 2025 at 9:33 AM
divergent-boundary.bsky.social
You were so great at The Comedy Attic! Thank you so much for coming to Bloomington!
March 10, 2025 at 11:38 PM
divergent-boundary.bsky.social
What a great cast! I'm so excited!
March 10, 2025 at 11:34 PM