The Stoneham Barite Locality, Stoneham, Colorado

Collector’s Edge Minerals, Inc. recognizes and thanks Rocks & Minerals for permission to use portions or all of their original article from the “Rocks & Minerals”, Volume 65, Number 3, pp. 202-222.  Contributing authors were Peter J. Modreski, U.S. Geological...

Two Point Amazonite Mine, Teller County, Colorado

In June, 1997, a beautiful pocket of blue-green microcline (v. amazonite) specimens was discovered in the classic Lake George, Colorado amazonite mining area. The specimens were discovered 2 meters beneath the surface, inside a collapsed pocket, eventually named the...

Benitoite Gem Mine, San Benito County, California

Introduction Benitoite is one of the world’s rarest gemstones and possesses many unique qualities compared to other gems. It has a high index of refraction and a dispersive power that is higher than diamond, making the stone extraordinarily bright and fiery when cut....

The Sweet Home Mine, Park County, Colorado, USA

The Sweet Home Mine, in Alma, Colorado 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. The “Alma King”, and many other world-class specimens were discovered in this mine.