The crystal structure of Aragonite is also very unusual in that it is often found in needle-like, six-sided prisms. Similar to Quartz, only a tiny percentage of Aragonite is of gem-quality material.
Mined in just a handful of places around the world, Aragonite is named after the Molina de Aragon mine in Guadalajara, Spain where it was discovered in 1788. Three large Aragonite caves have also been discovered in Slovakia, Mexico and Argentina.
The cave in Slovakia is buried deep in the Slovak Metalliferous Mountains and is Known as the Chtinska Aragonite Cave.