Coconut Geode

Las Choyas geodes, also known as coconut geodes. They contain a variety of quartz and other minerals. The quartz crystals range from clear to smoky to rarely amethyst crystals. Many secondary minerals such as goethite, hematite, mordenite, calcite, and galena may also be present in some geodes. 

Geodes are rounded, hollow voids in rocks filled with crystals and other minerals. They are typically formed when air bubbles inside of volcanic rock form cavities. Over time, as mineral-rich water seeps into the void, it begins to deposit tiny crystals on the sides of the cavity. After millions of years, the flow of water gradually builds crystals inside the empty space.

Las Choyas geodes, often referred to as "coconut geodes", are mined from 100 to 200 feet below the surface near Chihuahua, Mexico. Shafts are drilled down to the geode-bearing white clay, then tunnels are dug horizontally to extract the geodes.

Weight: 90-150 grams each

Measurements: 55-60 mm long x 30 mm deep