The Sweet Home Mine has produced many of the world's best rhodochrosite specimens. It's bright red color and gemmy interior place this mineral among the most desirable of all mineral species. In 1991 Bran Lees and Kathryn Lees, of Collector’s Edge Minerals, Inc., and several key investors, entered into a leasing agreement with the Sweet Home mine owner, Leonard Beach, to operate and mine the Sweet Home over the next several years, under the name “Sweet Home Rhodo, Inc.”. This enterprise would lead to the unprecedented discovery of the world’s finest rhodochrosite specimen, the “Alma King” and many other world-class specimens. The “Alma King”, and the “Crystal Wall”, a 2.1 meter by 2.4 meter reconstructed pocket, sprinkled with hundreds of deep red, translucent rhodochrosite crystals from the Sweet Home mine, now reside in the Denver Museum of Natural History. In 2002 rhodochrosite was named the Colorado State mineral.