You can file for divorce from your wife Grounds of desertion as 13(1) (ib) of the Hindu Marriage Act, 1955 deals with desertion as a ground for divorce wherein, the deserted spouse filing the petition is the one who must sufficiently prove and provide evidence for his conduct showing unmistakably that the desertion was against his will.
You can obtain a certified copy of the marriage certificate from the Registrar where the marriage was registered and it would be treated as original for all official purposes.