Vintage Natural Spider Web Turquoise Ring in Sterling Silver Size 8.5

Vintage Southwestern sterling silver ring. Hand made and likely Navajo though it is not signed. It is set with a natural spider web turquoise stone that has chert black matrix. I am not sure what the red spots are, but it looks like it is on top of the stone. Nice American turquoise stone.

Size 8.5 Face measures 1 1/8" by 7/8". Shank is hand wrought and has a cold chisel split shank. Weight: 7.7 grams.