Vintage Native American Navajo sterling silver and turquoise ring

vintage Native American Navajo sterling silver and turquoise ring, featuring a classic Southwestern design. The specific mine from which the turquoise originated is likely Number Eight turquoise, known for its distinct blue color and matrix webbing, though this cannot be definitively confirmed without documentation.   Design Details Style: The ring is designed in a traditional Navajo style, which emphasizes substantial silverwork around the stone. Materials: It is crafted from sterling silver and features a prominent, teardrop-shaped turquoise stone. Accents: The turquoise is set in a simple bezel and surrounded by a twisted silver rope design, a common feature in Navajo jewelry. Decorative silver spheres (known as raindrops or buttons) accent the top and bottom of the stone setting.  Shank: The band of the ring appears to be a split shank, which is another typical element of this style.  The visual characteristics are highly consistent with authenticated pieces made by known Navajo silversmiths, such as Andy or Darrell Cadman. Many authentic Native American jewelry pieces are hallmarked with the artist's signature. This ring is unsigned.