18k White Gold and Green Tourmaline 14.81 Total Weight Ring

18K white gold Lisette double halo with split shank green tourmaline ring. The unheated cushion cut apple green tourmaline weighs 14.81ct. The country of origin is Afghanistan. There is a double split shank. There are 136 round diamonds set in the halo and split shank weighing1.43ctw. The diamonds are G-H in color and VS in clarity. The ring is a size 6.5