Lander Blue is an iconic turquoise mine considered one of the Seven Classic Mines of Nevada. The history is found in Turquoise in America Part Two 1910-1990.
 
This cabochon weighs 5.0 carats and measures 1.5cm X 1cm. It is priced at $400 a carat or $2000. It is not treated and backed. I have assigned a TG of 94 or GG. I purchased this with Bob Brucia of Nevadagem from a necklace made in the 1970’s authenticated as Lander Blue by Bob.