Vintage Sterling Turquoise Double Shadow Box Ring

Vintage Old Pawn Double Turquoise Shadow Box Style Ring. Measures approximately 7/8" length & 1/2" wide. The band is slightly out of round. Unmarked but tested as sterling silver. Measures 6 1/2 on my ring mandrel (See 3rd photo). I am not a jewelry expert but will be happy to answer any additional questions to the best of my knowledge. Thank you!