Lander Blue and one Chinese Mike Ryan- There has been a great deal of interest in the X Ray Florescence (XRF) method of testing turquoise...

Gem grade Canderlaria from the Wayne Nelson Collection Provenance and grade are the two main determinants of price. One way to establish...

I had a thirty year career as a financial planner and investment advisor so I have some experience to draw on when it comes to...

Gem Grade Pilot Mountain Grading turquoise is difficult. In this video Mike discusses the highest grade, the elusive Gem Grade, and we...