Antique Victorian Gold Hardstone Cameo Ring

This ring tests as a low karat gold but I am not if it is 8 or 9K but I know it is below 10K.  Antique rose gold ring is marked with initials E.M to S.J.L.  

Ring size - 6 1/2
Ring face - 5/8 inch
Weight - 2.3 grams