In this video Mike searches for the rare Azure turquoise which is better known as Tyrone. This was the most important turquoise during the period of the Great American Turquoise Rush 1890-1910.
Water web is a distinctive look in turquoise. At higher grades it is rare and very desirable. In this video Mike explains the look and we see examplea from Kingman and Candelaria.
Challenges with XRF Data Neil Ray. West Texas Analytical Laboratory. XRF testing has significantly grown as an option to test unknown turquoise, and the algorithm is constantly improving with growing
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