Coconut Geode Pendants - A Stone With Undiscovered Treasures Coconut geodes are unintentionally undiscovered treasures with a surprise within. As implied by its name, the stone has a coconut-like appearance and splits apart to expose a variety of minerals. A wide variety of minerals, such as Calcite, Agate, Smoky Quartz, Amethyst, and others, are often visible when you split them open. Each geode has a unique color because of the spontaneous formation of multiple crystal types. They are primarily mined in Chihuahua, Mexico, at depths of at least 100 feet. These mysterious natural formations have astonished gem hunters to a considerable extent, and they are now being used to make stunning Coconut Geode Jewelry.