Vintage MET Amber Oval Ring

This vintage ring is made of a silver tone metal and a long oval piece of amber. The metal has the look and feel of sterling silver but there is no stamp to confirm it. The amber is a long oval that is bumpy along the front, is warm to the touch, and glows green under black light. The ring is stamped MET on the bottom exterior of the ring, but I'm not sure who or what that is. Size: 9 Band width: 2mm Weight: 6.13g Love the piece but not the price? Make an offer!