Amethyst Cut Base Geodes

This listing is for one gorgeous amethyst cut base geode. All crystals vary in height/thickness and will be randomly selected according the size/weight of your choice. Amethyst geodes are born out of lava. During volcanic eruptions, several gas bubbles form deep within the liquid lava and slowly rise to the surface as the temperature changes. These gas bubbles get locked in place when the lava cools down and creates vesicles or cavities within the rock. Some scientists theorize that the cavities can also be formed when cooling lava flows near tree roots or other things sticking out of the ground. The cooling lava hardens completely before filling in around the outcrop, creating a cavity. Over time, these cavities get filled with silica-rich liquid containing traces of iron and aluminum, which eventually crystallize and give birth to the amethyst. Please note that photos are a representation of the product. Since these are natural formations they will come in different shapes, sizes and