Navajo Raindrop Ring set with Green Vesuvianite Size 6

Vintage Navajo sterling silver raindrop ring. The shank is hand pulled and cold chisel split with a raindrop at each split. The apple green stone does not register in my stone tester, yet on can see some luminescence and color striations. I believe that this stone is Vesuvianite. I did not have the GIA confirm that as it is very expensive to do that. Stone is bright and silky looking. Size 6. Face measures 3/4: wide. Weight: 4.1 grams.