Morenci is a famous turquoise coming from the Morenci copper mine. The history of Morenci is found in Turquoise in America Part Two, 1910-1990.
 
This pair of cabochons weighs 35.5 carat and measures, each, 3cm X 1cm. They are priced at $25 a carat or $887. They are not treated and are backed. I have assigned a TG of 83 or HG. I purchased these from Brown’s Trading. White spots are camera flash.