The superb rhodochrosite crystal on matrix pictured here, known as “The Alma Queen,” is among the most famous specimens in all of mineralogy. It is the best specimen recovered from a pocket found in 1965 by John Soules and Warren Good.
How to Clean Geodes. A geode is a rock that contains crystals in a hollow cavity. When geodes are split open, you can see the crystals inside the rock. If you found a geode, you'll need to clean it so it shines. Cleaning a geode is easy.