Bisbee is one of the most recognized and desirable of all turquoise. The history of Bisbee may be found in Turquoise in America Part Two, 1910-1990.
 
This cab weighs 3.1carats and measures 1.5cm X 0.75cm. It is not treated and is not backed. It is priced at $30 a carat or $93. I have assigned a TG of 80 or HG High Grade. I bought the rough from Bruce Mead and cut the cab myself.