Have some good old fashion educational fun and be the first to see inside a geode that is millions of years old! Hand-pick your very own geode from our collection of unique geodes from around the world. We’ll slice your choice in half while you wait. You never know what fun you’ll find when this volcanic gas bubble, millions of years old, is opened for the very first time. Our staff LOVES to talk about geodes and will help personalize your experience. Please ask anything you’d like to know!
Discovery Depot Attractions Video:
Please read through the list below and learn about these amazing pieces of natural beauty! If you have any additional questions, please contact one of our friendly staff members by calling 860-443-4367 or visit our Contact Us page.
- A geode is an unusual, rounded mineral formation typically with an exterior shell of chalcedony (very fine-grained quartz), with other minerals and / or crystals lining the interior. The name geode is from the Greek geo referring to the shape of the earth, since most geodes are spherical.
- A geode can form in any cavity within a rock, but the most common method for geode formation is via gas bubbles that form in cooling ash beds. The bubble gets “frozen” in place when the silica rich ash / dust hardens. The partial or complete filling of the bubble may occur immediately or even thousands to millions of years later and can encompass a variety of different minerals.
- Geodes can also be filled with surrounding silt and sediments, forming a “mud ball.” If a crystal breaks off inside the geode, you can hear rattling (the only guarantee of a hollow geode!), hence the nickname “rattlestone”. Occasionally, water gets trapped in the geodes, forming what is called an enhydro, Greek for “water inside”.
- Geodes are fascinating and unique forms of nature, and make for some good, educational fun! Like fingerprints, no two are exactly alike!
Geodes start at $8.99 and go up to over $200. The price is determined by the size of the geode and there are a variety of sizes and prices to choose from.
At Discovery Depot, all geodes are priced to include the cutting fee. We also offer a selection of less expensive, crack-your-own geodes upstairs in A to Z Minerals and Ancient Fossils so you can bring the fun home. Be sure to wear protective eye-wear while enjoying this educational fun!
Yes! When you select a geode, you keep the whole thing. We are however, very happy to accept donations for our geode display.
We have nicknamed geodes “Mother Nature’s Lottery Ticket”, because you never know what you’re going to get until after it’s been opened. But since you’re starting with the remnants of the “bubble shell”, you’ll always have something to bring home as a souvenir of your visit full of educational fun to Discovery Depot!
Unfortunately, we do not have any way of determining what the inside of a geode looks like. We can however, tell you which mine a particular geode is from and show you similar geodes. Keep in mind; every geode is one-of-a-kind, and beautiful in its own way.