Vintage Thai Silver Filigree with Cut Glass Dangling Screw Back Earrings

These are unmarked, but the craftsmanship is beautiful, with silver filigree decorated with what we believe are glass stones, but could be rhinestones. The have a two tiered flower at the top, with an umbrella below holding eight strands of filigree with five stones in each. They did test positive for silver using an acid test.
 
These are in great condition but for a screw back that may need to be bent back into place. Date acquired unknown but these were probably purchased in Thailand.
 
These dangle about 1 3/4” below the lobe, H 3 1/4” x W 3/4” 
Approx 0.45 oz.