And usually plated pieces will say RGP after the 14k (or KT for "rolled Gold Plate" which is only a thin layer of gold onto another metal. ) or GP (Gold Plate ) or GPE (Gold electro plate)
Would you know if the stone is synthetic or real? It's an unusual color for aquamarine (most are more like a transparent sky blue(like my face!! haha!!)
When I bought this many years ago I was told that the stone was an aqua marine. I am selling the ring based on what I was told at the time. As far as I know that's what the stone is.