i love the cement tile. don't know how it's passe' since you can find it in the middle east from centuries ago.
for yours, since your tile is busy, go w/less is more. I'd do a reclaimed wood mantle,,,like this design
the shiplap,,,I don't know. depends on what else is going on w/the room. here's how it would look
you could always do some wood trim work,,,,
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tiles
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