🪨 Geode facts
| Age | Varies widely. Many collector geodes are Mississippian (about 340 million years) or Cretaceous to Tertiary volcanic (about 130–25 million years). |
|---|---|
| Origin & sources | Worldwide: USA (Iowa, Missouri, Illinois, Kentucky, Utah, Oregon), Mexico, Morocco, Brazil, Uruguay, Madagascar, Namibia. |
| Composition | A shell of chalcedony or limestone lined with quartz, amethyst, calcite, celestite and other crystals |
How it forms
Geodes start as hollow spaces: gas bubbles in lava, or cavities and dissolved nodules in sedimentary rock. Mineral-rich groundwater seeps in over thousands to millions of years, first lining the wall with chalcedony, then growing crystals inward. A geode has a hollow center; a nodule is completely filled.
🌍 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.
✨ Metaphysical & Folklore
These are traditional and folk beliefs from crystal lore. They are not scientific or medical claims – crystals are not a substitute for professional care.
A plain rock that hides a crystal-lined cavity is a classic symbol of inner beauty and hidden potential.
💞 Pairs well with (traditional pairings)
AmethystPaired in tradition for meditation, with Amethyst bringing peaceful sleep as well.
ApophylliteBoth carry the theme of meditation, so together they're thought to reinforce it.
JadeA natural partner for harmony; Jade also adds good luck.
Rose QuartzPaired in tradition for harmony at home, with Rose Quartz bringing self-love as well.
Clear QuartzClear quartz is the traditional amplifier, said to boost geode's discovering hidden potential.
Learn more
Geode / nodule
Purple
CrownRoot
Healing crystal