1970's Navajo ring- Bisbee turquoise

1970's Navajo handcrafted ring. Made of solid sterling silver with genuine turquoise. The ring features a single piece fo dark blue Bisbee turquosie. The tradional mounting is made from square wire & twist wire surround and sets on a 3-prong split sheet silver shank. Nicely weighted and easy to wear. 

Mounting: 1-1/8" x 3/4"

Stone: 7/8" x 3/8"

Stone: “Bisbee Blue” is a name that originates from the Bisbee Mine, near Bisbee, Arizona, in Cochise County, USA. The term refers to the turquoise that comes from copper mines in this region. Turquoise from Bisbee has a reputation as a hard, finely webbed stone with high blue color, ranging from sky blue to a dark lavender blue. The matrix patterns vary a great deal but can be characterized by the deep chocolate brown to black webbing. The hardness is 4.5 on the mohs scale.