Blue gem rough turquoise

Authentic Blue Gem Turquoise rough from the John and Estell Hartman collection, we purchased from Cutler Edgar who was one of the most famous Nevada minors of the past. Purchased in approximately 1974. This is from the famed Blue Gem Turquoise Mine near battle Mountain, Nevada. There is 104.5 grams of very rare and hard to find Turquoise here, of course, it is natural!