Spider Web Turquoise Pendant in Sterling Silver Navajo

Vintage Navajo sterling silver pendant that is set with a large spider web turquoise stone. It is a good deep color with black matrix. The white area is not a refection, that area of the stone is almost white. 

Measures 1 5/8" tall by 1 1/8". Weight: 16.3 grams. No hallmarks. Acid tested.