Solid, sterling silver, vintage Navajo Lapis Lazuli bangle cuff, signed the by artisan. 

Circa 1960s.

Dimensions of bangle:

Width: 9mm (0.4")
Length of metal: 6" approx
Internal dimensions: 60mm x 45mm (2.3" x 1.8")
Gap: 1.3" (slightly adjustable)
Weight: 31.8 grams

Material: Silver & Lapis Lazuli