1940s Rare Vintage Serpentine Native Sterling Silver Ring, Size 7 1/2 JR 821

Very unusual design of a Thunderbird or maybe a Knifewing Vintage Native ring set with beautiful green Serpentine stones. Look at the teensy serrations on the bezels. Set off with scrolled and twisted wire.
-Circa 1940s. Nice wide comfortable shank. Good wear and patina.

-Tested Sterling. Unmarked like many of the oldies.
The ring is size 7 1/2 and weighs 13 grams.

-Inventory #JR 821