Gem grade Hidden Valley turquoise from the Wayne Nelson Collection. Wayne Nelson is a private man and is not well known outside of the...

Tourmaline from the Himalaya Mine at Mesa Grande California. Courtesy of Tina and Sonny Vogt. Jewelry by Sonny Vogt. Photo by Mike Ryan...

Turquoise has only two commercial applications. It may be included in jewelry, often fine handmade Native American jewelry, or it may be...