Beautiful Vintage Authentic Navajo Sleeping Beauty Turquoise and Silver Ring

This is an authentic and beautiful Navajo turquoise and silver ring. The stone is known as "Sleeping Beauty" turquoise and is no longer mined, so this is a fairly rare stone. The work is clearly Navajo silversmithing, and this ring is fairly unusual in that it is adjustable. Roughly size 7.5 or 8 but can be adjusted. Unsigned. Ready to be worn. A wonderful addition to a turquoise collection.