I think a solid surface will look better. Use the quartzite.

The marble tiles would look okay but they're a little too small and busy for my taste. They read more of a bathroom or backsplash tile than fireplace. The quartzite would look nicer, but you need to make sure you have enough to match the veining otherwise it will look even worse.

I’m neutral between the two materials (usually I like slabs but the marble tile is really pretty...)

That said the poorly executed tile install is terrible. Did the contractor install the tile or an actual tile installer? Was it Friday at 4 when they installed the tile?

I prefer the solid surface. Those small tiles remind me of a shower floor, accent tile or a backsplash.

I actually like the small marble tiles! But I did a marble-look hex tile for my own fireplace so that may be influencing my view :) The solid quartzite does look a bit more formal and traditional (to me) if that fits your space better.

I would use the quartzite. It will look classier. They eye also like repetition among elements and I like the idea of repeating the quartzite.

I agree -- I hate the way the guy did it! I told him it needs to be closer together and he said "That's as close as it gets." !!!!! So I stopped him and said I have to re-think this. Geeze -- I just can't wait for this to be over!

I also like the look of the large slab of marble, but that was too expensive. I happen to have enough quartzite, so I'm trying to decide if that'll look best

I like the looks of the quartzite with your very traditional fireplace. Will be pretty. The little squares seem more modern imo.

I'm unclear on this.....has tile already been installed?

CDR:

He installed a few pieces, and I stopped him because I didn't like the look

Excalibur -- Thank you, but I don't think steel goes with my traditional design .

Quartzite w/o the stains.

like the larger pieces. Makes more of a statement