Where are the Worlds Largest Natural Crystals?
The largest known natural crystals in the world are in the Crystal Cave of the Giants, within Naica mine in northern Mexico. The cave is filled with selenite crystals as long as 36 ft (11 m) and weighing up to 55 tons. These crystals are so impressive that when pictures of them first hit the Internet, the vast majority of observers labeled them as fake. These natural crystals achieved their size by growing for millions of years in near-perfect conditions, submerged in mineral-rich water with a consistent and optimal temperature of 136 degrees F (58 degrees C).
