Featured indian? metal goblet

Hi folks

something i found in a charity shop yesterday, only a couple of quid, and was almost black, but thought it had potential
might have gone a bit far with the clean, but wanted the details to show
im presuming from india. i see quite a few but this seemed better. not sure what metal it is. solid/heavy, think brass
the black areas are i think a black enamel
not sure of the age
any info or comments appreciated

 

base is what the colour looked like before clean

 

I do think India. Bidriware is inlayed with silver, whereas, this appears to be enamel. Might be what is called Bichi work.

 

very helpful, thanks guys. will look into both

 

It's lovely! Good luck with it.

 

thanks fig