Vintage Navajo sterling silver rosette ring set with clean blue turquoise. Looks like a flower ring! One turquoise stone has a small spec of pyrite and the center stone has a natural indentation with traces of matrix. See close up photo. It is not chipped from wear.
Size 6 3/4 Diameter is 18mm in diameter or just a little under 1/2”. Weight: 3.4 grams.