2 pairs Vintage KMT Turquoise Dangle Earrings -Lightweight, Eye-catching, NOS

Two pairs of lightweight turquoise earrings… I believe they are reconstituted turquoise stone. 1 pair square, about the size of a quarter, 1 pair somewhat oval, a bit larger. Please see pics close-up… the oval pair when viewed closeup has some sort of markings on them… I believe this is from the manufacturing process as it is somewhat uniform, and isn’t noticeable unless viewed very close up, but may come off as “scratched up” when scrutinized. Not sure, which is why I’m listing as a little mini bundle with the square ones. The square ones has no such markings. These are vintage NEW OLD STOCK. Brand KMT.