Depends on the shape, location, type of stone, how you plan to hang it, and what else is going on in the room. Can you post pics?

I am assuming you haven't finalised your wall colours and colours of any other fixed elements. In case you have finalised your color scheme you would need to see which of these colours blend well or complement with that scheme. Assuming none of this info is available, then you could look at the neutrals which go with all colours. The white tile and the 2 colours at the end would be preferable. If you want color on the floor as well as drama, you can choose from the 2nd options from both sides or even the 1st from left.

that is what i have added if you can see the pic above.. want some suggestions on partition that i can use between dining and sitting

Black Galaxy Granite. Size 4x2 Ft. Thickness- 2-4 mm, Good for exterior wall cladding