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Agate Necklace


Agate geodes are born out of lava. These crystals are often formed after volcanic eruptions when lava cools around air bubbles. These pockets leave space for groundwater to seep in. But the water itself doesn’t produce geodes–it brings along minerals which stay in the rock even after the water evaporates. The minerals then start to build on each other to form crystals. It can take thousands or even millions of years for these crystals to form a spherical rock which contains a hollow cavity lined with crystals.