This is probably one of finest examples of 60 year old Morenci turquoise in medium sized ring that we offer! The deep blues with the silver colored matrix is fantastic. Set in solid sterling silver and handmade by a Navajo artisan. It is shank is made of heavy gauge silver and setting measures 1" x 1" 1/2.Easily sized to fit most fingers. Please specify your size when ordering. Morenci Turquoise: Morenci Turquoise is mined in southeastern Arizona, in Greenlee County. It is light blue to high blue in color. Morenci has an unusual matrix of irregular black pyrite, or fool’s gold; when polished, the pyrite often looks like silver. It also is sometimes webbed in a darker shade of blue, called water webbed. Morenci turquoise is well known because it was one of the first American turquoises to come on the modern market and is often difficult to obtain because the mine is now depleted, making it an exceedingly collectible turquoise. Material coming out in the 1960’s seems to be harder, tending more to the blue greens, usually with the pyrite. In the 1970’s, the material was a much brighter blue, often with quartz along with the pyrite.