Art Deco Cabochon Silver Ring size 17mm 6 1/2

New to Poshmark? Use MAGPIESTEVE as your code and get $15 off your first order Cabochon ring. It’s silver on testing but I see 10k as a mark. Possibly plated over silver. It appears to have some age. I don’t know the stone! There is a small crack in the ring. It seems secure and doesn’t move on moderate pressure. Size about 17mm or 6 1/2. Depending on the stone this could have significant value! I have taken close ups of the stone to help you identify it!