Determining the Identification and Grade of Turquoise Using Trace Element Chemistry
 
Identification of turquoise is difficult without knowing the provenance of ownership. Subjective observation may be useful but is often just a guessing game.
In this detailed scientific study Neil Ray and Mike Ryan II demonstrate how turquoise may show a distinctive footprint for a specific mine. This report provides evidence of a way for identifying turquoise by scientific analyses to support subjective observation.