I love the look of stacked stone on the fireplace or wall. The combination of stone and modern elements makes a very cozy inviting space. All pictures are from www.houzz.com.
Check out www.stoneselex.com. This is a Toronto supplier of the stacked stone.
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redesignedinteriors 
Yes, I agree, you can’t beat natural materials to give a room some depth and solidity which results in a nice cosy environment. Good points.