Large Modernist turquoise rectangular pendant set in selling Sterling silver frame

Large modernist turquoise rectangular pendant set selling in Sterling silver frame

-circa 1990
-Artisan made
-unmarked, but acid tests sterling silver
-Deco influence frame with stacked ball corners

Good vintage condition with no noted damage or repairs

2"x 1 11/16" not including hasp
2 1/2" x 1 11/16" including hasp