Good golly, it’s a geode!
Rocks are everywhere. They can be huge boulders or teeny tiny pebbles. But did you know there are special rocks that have treasures inside? These are called geodes, and they’re real!
Let’s dig our way through the world of geodes and crack open some cool discoveries on this rocky subject!
What is a Geode?
Geodes are hollow rocks that can either be round or oblong. The outside of the geode tends to be bumpy or rough textured. In fact, the name geode comes from the Greek word geoides, meaning “earthlike.” But even though the inside of this rock might seem plain, the inside holds a special secret treasure: crystals! These crystals come in many shapes, sizes, and colors, and most of the time, they’re made of quartz.
Fun Fact: The color of the geode is dependent on the minerals present in the environment. They can be purple, blue, red, yellow, orange, and green.
How Are Geodes Formed?
The place the geode is found tells us a lot about how it was formed. The geodes found in volcanic rocks start off as a bubble, or small pockets of air. The geodes found in sedimentary stones may have been formed in a cavity left behind by an animal’s burrow, the roots of a tree, or even a mud deposit.
Over time, the outer edges of the rock harden into a spherical shape. Then groundwater seeps into the cracks of the geode–and that’s where the real “magic” begins.
If we were to closely examine groundwater, we would find all sorts of minerals inside. Some of these minerals may include quartz, calcite, and amethyst. Over long periods, it’s these tiny mineral particles that develop into the amazing crystals buried deep inside the geode.
Fun Fact: It can take thousands of years to for a large geode to form!
Like human fingerprints, no two geodes are alike. This is because each one is formed over time with different mineral compounds.
The most prized geodes are the ones that contain the rare black calcite or purple amethyst crystals. These can both sell for upwards of $5,000!
How Can You Hunt for Geodes?
Although geodes can be found all over the world, the most prevalent places are those with volcanic ash beds, limestone deposits, and desert regions. In the United States, you’ll probably find geodes in California, New Mexico, Arizona, Iowa, Utah, Nevada, Ohio, Kentucky, Illinois, and Indiana. Outside of America, you’re likely to discover geodes in Brazil, Canada, Australia, Namibia, and Uruguay.
But how do you crack open a geode once you have it? This can be tricky, even if the rock is small. The best way is to use a rock saw and/or a rock hammer. First, you make a small hole in the rock by placing a screwdriver on the rock and tapping it with the hammer. Depending on how old you are and how much experience you have with this, you may need someone to help you out. Then, once you have a crack, you can pry the rock open to reveal the inside. Rock saws also work because they have special blades designed to cut through the rock’s outer shell. Don’t forget to wear protective safety goggles!
Only once you see inside the rock can you tell if it’s a geode; if there aren’t any crystals, it doesn’t count!
Fun Fact: In Somerset, England, they call geodes “potato stones!”
Geode Folklore
Geodes aren’t just pretty rocks to look at. In fact, across many cultures throughout history, they’ve been thought to hold an immense healing ability. People used them to clear their minds and revitalize their creativity. Some believe that geodes represent a womb because they nurture the crystals inside for a very long time before they’re ready to be found. Others think geodes can be used to represent one’s heart or soul due to their beautiful centers.
Throughout all of history, people have meditated with geodes and kept them close to feel their positive effects. They’re said to increase feelings of wellbeing and boost the immune system. People use them in order to feel calm, peaceful, and revitalized. And while it’s believed that geodes have different healing properties depending on what crystal lies inside, they all are said to increase focus and to clear the mind.
Fun Geode Facts
Let’s discover more fun facts about geodes!
Did you know…
- Most geodes contain quartz, agate, and chalcedony.
- Chalcedony is usually white, blue, yellow, orange, or gray.
- Quartz can be clear, white, or purple.
- Purple quartz is usually referred to as amethyst.
- Agate can appear to be red, copper, green, or blue.
- The largest amethyst geode is called the “Empress of Uruguay.” This beauty stands over 11 feet tall and weighs about 2.5 tons.
Geodes! What a Surprise!
Wouldn’t it be cool to find a geode? Be on the lookout for these secret surprise stones the next time you’re out for a nature walk. You might just stumble upon one of these prized beauties!
