Skip to product information
1 of 6

Unbroken Geode

Unbroken Geode

4 total reviews

    Item #250


    Geodes are hollow rocks that often contain mineral formations.

    As with many geological formations, geodes often start with volcanic activity. But the geode is not formed by the volcano itself, but rather a void that it leaves behind.

    When lava cools, it often contain air pockets. After the surrounding material hardens into rock, mineral-rich groundwater slowly feeds silicas into the void where they are deposited, little by little, over eons. Since these mineral deposits are often homogeneous, crystalline structures are allowed to form. As the surrounding bedrock erodes, the geode is freed from its formation strata.

    Many geodes contain quartz crystals, but there is a small chance they could contain another crystal type. There is no way of knowing until they are opened. The contents and structures in a geode are entirely unique and have never been seen by anyone until you break it open.

    To break open a geode we recommend putting it in a bag to contain any flying debris and hitting it with a hammer. Be sure to wear safety glasses just in case!


    Small and medium geodes in the bag are approximately 1"-2"




      Size
      Regular price $13.50
      Regular price Sale price $13.50
      Sale Sold out
      Shipping calculated at checkout.
      Matter Subscriber Price:




      View full details

      AUTHENTICITY GUARANTEED

      We only list 100% verified authentic items. We work with reputable collectors, and regularly consult with our network of scientists and experts.

      • Free Shipping

        Orders ≥$50 qualify for free US shipping
        Orders ≥$100 qualify for free global shipping

      • Secure Payments

        Pay how you like: credit card, PayPal, After Pay, Shop Pay, Venmo, Apple/Google/Meta Pay & crypto

      • Simple Returns

        Change your mind? No problem. Enjoy easy returns within 30 days.

      Customer Reviews

      Based on 4 reviews
      100%
      (4)
      0%
      (0)
      0%
      (0)
      0%
      (0)
      0%
      (0)
      J
      J.B. (Virginia, United States)

      GREAT deal and excellent gift for young people (or anyone!).

      K
      K.B. (Pennsylvania, United States)

      Unbroken Geode

      K
      K.B. (Virginia, United States)

      The ball had a sizeable gash and several other defects but overall very cool.

      H
      H.S. (Pennsylvania, United States)
      Ode to the geode

      A nice bunch of small geodes… always fun to smash stuff and the sparkly interior is an added bonus. Exactly as advertised with quick shipping. Thanks so much!

      similar items_

      WE TAKE SCIENCE SERIOUSLY

      You deserve better than craft store science products. And we think learning is more impactful when you're holding a tangible piece of what you're learning about. That's why Stemcell exists.

      We're dedicated to providing the best scientific products available—whether they're fragments of scientific importance, experimental activities, or just interesting things that scratch your curiosity itch.

      With every new product launch, our list of new ideas gets longer rather than shorter. So check in often for our latest projects, and thanks for being a part of our endeavor to make the world a smarter place to live.

      Believe in yourself; for everything else, there's science.

      — TERRY MUDGE, FOUNDER & SCIENTIFIC DIRECTOR