Bisbee is an iconic turquoise no longer mined. The story is found in Turquoise in America Part Two 1910-1990.
 
This cab weight 15.7 carats and measures 2cm X 175cm. It is not treated and is backed. The price is $175 a carat or $2747 I have assigned a TG of 96 or GG. The matrix shows the rich red web very desirable in the highest grades and seldom found at any price.. The stone comes from Bruce Mead. White spot is camera flash.