Sterling vintage turquoise 925 southwest 4.5 ring

Sterling silver elegant Southwest 1970’s natural, rare Nevada turquoise. This is a tiny 4.5 ring it can be adjusted to a larger size by a jewelry shop. This is approximately 1.5 inches in length and .75 width. This mine had very little material extracted. The green blue matrix is exceptional. Stamped by maker mark and sterling on the underside. Please ask any questions. Thank you! Sage