Stunning large smoky quartz ring. The stone itself measures 1 7/8" X 1/2". It is held in place by four large prongs. It is open at the back to let the light shine through. There is something stamped inside the shank that it difficult to see. I'm assuming that it says sterling but there may be something else in addition to that. Size 7.5. I've examined the stone very carefully with my loupe and see that there are two very, very tiny chips on the one end of the stone. I don't see any scratches.